diff --git a/js_api_module/uri/native_module_uri.cpp b/js_api_module/uri/native_module_uri.cpp
index 94ef0c850049824fe17bcb8983e341c6ff1fc7c4..eae55b82bb648cc90eae28029f84a84a59e78530 100644
--- a/js_api_module/uri/native_module_uri.cpp
+++ b/js_api_module/uri/native_module_uri.cpp
@@ -35,7 +35,6 @@ namespace OHOS::Uri {
             std::string type = "";
             size_t typelen = 0;
             NAPI_CALL(env, napi_get_value_string_utf8(env, argv[0], nullptr, 0, &typelen));
-            type.reserve(typelen + 1);
             type.resize(typelen);
             NAPI_CALL(env, napi_get_value_string_utf8(env, argv[0], type.data(), typelen + 1, &typelen));
             object = new (std::nothrow) Uri(type);
@@ -172,13 +171,11 @@ namespace OHOS::Uri {
         std::string key = "";
         size_t keyLen = 0;
         NAPI_CALL(env, napi_get_value_string_utf8(env, argv[0], nullptr, 0, &keyLen));
-        key.reserve(keyLen + 1);
         key.resize(keyLen);
         NAPI_CALL(env, napi_get_value_string_utf8(env, argv[0], key.data(), keyLen + 1, &keyLen));
         std::string value = "";
         size_t valueLen = 0;
         NAPI_CALL(env, napi_get_value_string_utf8(env, argv[1], nullptr, 0, &valueLen));
-        value.reserve(valueLen + 1);
         value.resize(valueLen);
         NAPI_CALL(env, napi_get_value_string_utf8(env, argv[1], value.data(), valueLen + 1, &valueLen));
         std::string temp = muri->AddQueryValue(key, value);
@@ -203,7 +200,6 @@ namespace OHOS::Uri {
         std::string segment = "";
         size_t segmentLen = 0;
         NAPI_CALL(env, napi_get_value_string_utf8(env, argv[0], nullptr, 0, &segmentLen));
-        segment.reserve(segmentLen + 1);
         segment.resize(segmentLen);
         NAPI_CALL(env, napi_get_value_string_utf8(env, argv[0], segment.data(), segmentLen + 1, &segmentLen));
         std::string temp = muri->AddSegment(segment);
@@ -233,7 +229,7 @@ namespace OHOS::Uri {
             HILOG_ERROR("URI:: can not get scheme size");
             return nullptr;
         }
-        scheme.reserve(schemeLen + 1);
+        scheme.reserve(schemeLen);
         scheme.resize(schemeLen);
         if (napi_get_value_string_utf8(env, argv[0], scheme.data(), schemeLen + 1, &schemeLen) != napi_ok) {
             HILOG_ERROR("URI:: can not get scheme value");
@@ -266,7 +262,7 @@ namespace OHOS::Uri {
             HILOG_ERROR("URI:: can not get userInfo size");
             return nullptr;
         }
-        userInfo.reserve(userInfoLen + 1);
+        userInfo.reserve(userInfoLen);
         userInfo.resize(userInfoLen);
         if (napi_get_value_string_utf8(env, argv[0], userInfo.data(), userInfoLen + 1, &userInfoLen) != napi_ok) {
             HILOG_ERROR("URI:: can not get userInfo value");
@@ -299,7 +295,7 @@ namespace OHOS::Uri {
             HILOG_ERROR("URI:: can not get pathStr size");
             return nullptr;
         }
-        pathStr.reserve(pathLen + 1);
+        pathStr.reserve(pathLen);
         pathStr.resize(pathLen);
         if (napi_get_value_string_utf8(env, argv[0], pathStr.data(), pathLen + 1, &pathLen) != napi_ok) {
             HILOG_ERROR("URI:: can not get pathStr value");
@@ -332,7 +328,7 @@ namespace OHOS::Uri {
             HILOG_ERROR("URI:: can not get fragmentStr size");
             return nullptr;
         }
-        fragmentStr.reserve(fragmentLen + 1);
+        fragmentStr.reserve(fragmentLen);
         fragmentStr.resize(fragmentLen);
         if (napi_get_value_string_utf8(env, argv[0], fragmentStr.data(), fragmentLen + 1, &fragmentLen) != napi_ok) {
             HILOG_ERROR("URI:: can not get fragmentStr value");
@@ -365,7 +361,7 @@ namespace OHOS::Uri {
             HILOG_ERROR("URI:: can not get queryStr size");
             return nullptr;
         }
-        queryStr.reserve(queryLen + 1);
+        queryStr.reserve(queryLen);
         queryStr.resize(queryLen);
         if (napi_get_value_string_utf8(env, argv[0], queryStr.data(), queryLen + 1, &queryLen) != napi_ok) {
             HILOG_ERROR("URI:: can not get queryStr value");
@@ -398,7 +394,7 @@ namespace OHOS::Uri {
             HILOG_ERROR("URI:: can not get authorityStr size");
             return nullptr;
         }
-        authorityStr.reserve(authorityStrLen + 1);
+        authorityStr.reserve(authorityStrLen);
         authorityStr.resize(authorityStrLen);
         if (napi_get_value_string_utf8(env, argv[0], authorityStr.data(),
             authorityStrLen + 1, &authorityStrLen) != napi_ok) {
@@ -432,7 +428,7 @@ namespace OHOS::Uri {
             HILOG_ERROR("URI:: can not get authorityStr size");
             return nullptr;
         }
-        sspStr.reserve(sspStrLen + 1);
+        sspStr.reserve(sspStrLen);
         sspStr.resize(sspStrLen);
         if (napi_get_value_string_utf8(env, argv[0], sspStr.data(), sspStrLen + 1, &sspStrLen) != napi_ok) {
             HILOG_ERROR("URI:: can not get authorityStr value");
diff --git a/js_api_module/uri/test/test_napi.cpp b/js_api_module/uri/test/test_napi.cpp
index 3eb99c8e620a7d024fc5b87ca709328114815f8a..4ef6465710618ea6bed55ee5ebaffaf968434bcb 100644
--- a/js_api_module/uri/test/test_napi.cpp
+++ b/js_api_module/uri/test/test_napi.cpp
@@ -1201,91 +1201,4 @@ HWTEST_F(NativeEngineTest, ModuleTest010, testing::ext::TestSize.Level0)
     napi_get_named_property(env, instance, "ssp", &uriProperty);
     res = GetStringUtf8(env, uriProperty);
     ASSERT_STREQ(res.c_str(), "usc@www.test321.cn:996?key=1");
-}
-
-HWTEST_F(NativeEngineTest, ModuleTest011, testing::ext::TestSize.Level0)
-{
-    napi_env env = (napi_env)engine_;
-    napi_value exports = nullptr;
-    napi_create_object(env, &exports);
-    OHOS::Uri::UriInit(env, exports);
-    napi_value uriClass = nullptr;
-    napi_value constructorArgs[1] =  { 0 };
-    std::string input = "http://username:password@www.uritest.com:99/path/abc?query#fagment";
-    napi_create_string_utf8(env, input.c_str(), input.size(), &constructorArgs[0]);
-    napi_status status = napi_get_named_property(env, exports, "Uri", &uriClass);
-    napi_value instance = nullptr;
-    status = napi_new_instance(env, uriClass, 1, constructorArgs, &instance);
-    napi_value tempFn = nullptr;
-    napi_value result = nullptr;
-    napi_value key = StrToNapiValue(env, "qqwwee");
-    napi_value value = StrToNapiValue(env, "erfa");
-    napi_value keyArgs[] = { key, value };
-    napi_get_named_property(env, instance, "addQueryValue", &tempFn);
-    napi_call_function(env, instance, tempFn, 2, keyArgs, &result);
-    std::string res = GetStringUtf8(env, result);
-    ASSERT_STREQ(res.c_str(), "http://username:password@www.uritest.com:99/path/abc?query&qqwwee=erfa#fagment");
-    napi_value segment = StrToNapiValue(env, "wqaaas");
-    napi_value segargs[] = { segment };
-    napi_get_named_property(env, instance, "addSegment", &tempFn);
-    napi_call_function(env, instance, tempFn, 1, segargs, &result);
-    res = GetStringUtf8(env, result);
-    ASSERT_STREQ(res.c_str(), "http://username:password@www.uritest.com:99/path/abc/wqaaas?query#fagment");
-    value = StrToNapiValue(env, "https:");
-    napi_set_named_property(env, instance, "scheme", value);
-    napi_value uriProperty = nullptr;
-    napi_get_named_property(env, instance, "scheme", &uriProperty);
-    res = GetStringUtf8(env, uriProperty);
-    ASSERT_STREQ(res.c_str(), "https");
-    value = StrToNapiValue(env, "usernameinfo");
-    napi_set_named_property(env, instance, "userInfo", value);
-    uriProperty = nullptr;
-    napi_get_named_property(env, instance, "userInfo", &uriProperty);
-    res = GetStringUtf8(env, uriProperty);
-    ASSERT_STREQ(res.c_str(), "usernameinfo");
-}
-
-HWTEST_F(NativeEngineTest, ModuleTest012, testing::ext::TestSize.Level0)
-{
-    napi_env env = (napi_env)engine_;
-    napi_value exports = nullptr;
-    napi_create_object(env, &exports);
-    OHOS::Uri::UriInit(env, exports);
-    napi_value uriClass = nullptr;
-    napi_value constructorArgs[1] =  { 0 };
-    std::string input = "http://username:password@www.uritest.com:99/path/abc?query#fagment";
-    napi_create_string_utf8(env, input.c_str(), input.size(), &constructorArgs[0]);
-    napi_status status = napi_get_named_property(env, exports, "Uri", &uriClass);
-    napi_value instance = nullptr;
-    status = napi_new_instance(env, uriClass, 1, constructorArgs, &instance);
-    napi_value value = StrToNapiValue(env, "/path1/path2");
-    napi_set_named_property(env, instance, "path", value);
-    napi_value uriProperty = nullptr;
-    napi_get_named_property(env, instance, "path", &uriProperty);
-    std::string res = GetStringUtf8(env, uriProperty);
-    ASSERT_STREQ(res.c_str(), "/path1/path2");
-    value = StrToNapiValue(env, "qwfagm");
-    napi_set_named_property(env, instance, "fragment", value);
-    uriProperty = nullptr;
-    napi_get_named_property(env, instance, "fragment", &uriProperty);
-    res = GetStringUtf8(env, uriProperty);
-    ASSERT_STREQ(res.c_str(), "qwfagm");
-    value = StrToNapiValue(env, "aaa=bbb");
-    napi_set_named_property(env, instance, "query", value);
-    uriProperty = nullptr;
-    napi_get_named_property(env, instance, "query", &uriProperty);
-    res = GetStringUtf8(env, uriProperty);
-    ASSERT_STREQ(res.c_str(), "aaa=bbb");
-    value = StrToNapiValue(env, "user@www.test112.cn:189");
-    napi_set_named_property(env, instance, "authority", value);
-    uriProperty = nullptr;
-    napi_get_named_property(env, instance, "authority", &uriProperty);
-    res = GetStringUtf8(env, uriProperty);
-    ASSERT_STREQ(res.c_str(), "user@www.test112.cn:189");
-    value = StrToNapiValue(env, "//uscffac@www.testut.cn:223?key=val");
-    napi_set_named_property(env, instance, "ssp", value);
-    uriProperty = nullptr;
-    napi_get_named_property(env, instance, "ssp", &uriProperty);
-    res = GetStringUtf8(env, uriProperty);
-    ASSERT_STREQ(res.c_str(), "//uscffac@www.testut.cn:223?key=val");
 }
\ No newline at end of file
diff --git a/js_api_module/url/js_url.cpp b/js_api_module/url/js_url.cpp
index 85d127c2ec746890b800ccf19b2c182d43c876c5..215ee3d5206fa13443da9314ee31c1aaeacda4b7 100644
--- a/js_api_module/url/js_url.cpp
+++ b/js_api_module/url/js_url.cpp
@@ -1805,7 +1805,7 @@ namespace OHOS::Url {
             HILOG_ERROR("URLSearchParams:: can not get buffer size");
             return nullptr;
         }
-        name.reserve(nameSize + 1);
+        name.reserve(nameSize);
         name.resize(nameSize);
         if (napi_get_value_string_utf8(env, buffer, name.data(), nameSize + 1, &nameSize) != napi_ok) {
             HILOG_ERROR("URLSearchParams:: can not get buffer value");
@@ -1836,7 +1836,7 @@ namespace OHOS::Url {
             HILOG_ERROR("URLSearchParams:: can not get buffer size");
             return nullptr;
         }
-        name.reserve(nameSize + 1);
+        name.reserve(nameSize);
         name.resize(nameSize);
         if (napi_get_value_string_utf8(env, buffer, name.data(), nameSize + 1, &nameSize) != napi_ok) {
             HILOG_ERROR("URLSearchParams:: can not get buffer value");
@@ -1871,7 +1871,7 @@ namespace OHOS::Url {
             HILOG_ERROR("URLSearchParams:: can not get buffer size");
             return;
         }
-        name.reserve(nameSize + 1);
+        name.reserve(nameSize);
         name.resize(nameSize);
         if (napi_get_value_string_utf8(env, buffer, name.data(), nameSize + 1, &nameSize) != napi_ok) {
             HILOG_ERROR("URLSearchParams:: can not get buffer value");
@@ -1884,7 +1884,7 @@ namespace OHOS::Url {
             HILOG_ERROR("URLSearchParams:: can not get temp size");
             return;
         }
-        value.reserve(valueSize + 1);
+        value.reserve(valueSize);
         value.resize(valueSize);
         if (napi_get_value_string_utf8(env, temp, value.data(), valueSize + 1, &valueSize) != napi_ok) {
             HILOG_ERROR("URLSearchParams:: can not get temp value");
@@ -1902,7 +1902,7 @@ namespace OHOS::Url {
             HILOG_ERROR("URLSearchParams:: can not get buffer size");
             return;
         }
-        name.reserve(nameSize + 1);
+        name.reserve(nameSize);
         name.resize(nameSize);
         if (napi_get_value_string_utf8(env, buffer, name.data(), nameSize + 1, &nameSize) != napi_ok) {
             HILOG_ERROR("URLSearchParams:: can not get buffer value");
@@ -1950,7 +1950,6 @@ namespace OHOS::Url {
             return nullptr;
         }
         std::string buf = "";
-        buf.reserve(bufferSize + 1);
         buf.resize(bufferSize);
         if (napi_get_value_string_utf8(env, name, buf.data(), bufferSize + 1, &bufferSize) != napi_ok) {
             HILOG_ERROR("URLSearchParams:: can not get name value");
@@ -1977,7 +1976,7 @@ namespace OHOS::Url {
             HILOG_ERROR("URLSearchParams:: can not get name size");
             return;
         }
-        buffer.reserve(bufferSize + 1);
+        buffer.reserve(bufferSize);
         buffer.resize(bufferSize);
         if (napi_get_value_string_utf8(env, name, buffer.data(), bufferSize + 1, &bufferSize) != napi_ok) {
             HILOG_ERROR("URLSearchParams:: can not get name value");
@@ -1990,7 +1989,7 @@ namespace OHOS::Url {
             HILOG_ERROR("URLSearchParams:: can not get value size");
             return;
         }
-        temp.reserve(tempSize + 1);
+        temp.reserve(tempSize);
         temp.resize(tempSize);
         if (napi_get_value_string_utf8(env, value, temp.data(), tempSize + 1, &tempSize) != napi_ok) {
             HILOG_ERROR("URLSearchParams:: can not get value value");
diff --git a/js_api_module/url/native_module_url.cpp b/js_api_module/url/native_module_url.cpp
index ce29dec3a233b335f0c92f082e6de5b3fefc7c41..5455e277dcd7f007296b447283911f24e74ed53d 100644
--- a/js_api_module/url/native_module_url.cpp
+++ b/js_api_module/url/native_module_url.cpp
@@ -42,7 +42,7 @@ namespace OHOS::Url {
                 HILOG_ERROR("UrlStructor:: can not get argv[0] size");
                 return;
             }
-            temp.reserve(tempSize + 1);
+            temp.reserve(tempSize);
             temp.resize(tempSize);
             if (napi_get_value_string_utf8(env, argv[0], temp.data(), tempSize + 1, &tempSize) != napi_ok) {
                 HILOG_ERROR("UrlStructor:: can not get argv[0] value");
@@ -55,7 +55,7 @@ namespace OHOS::Url {
                     HILOG_ERROR("UrlStructor:: can not get argv[1] size");
                     return;
                 }
-                tempType.reserve(tempTypeSize + 1);
+                tempType.reserve(tempTypeSize);
                 tempType.resize(tempTypeSize);
                 if (napi_get_value_string_utf8(env, argv[1], tempType.data(),
                                                tempTypeSize + 1, &tempTypeSize) != napi_ok) {
@@ -108,7 +108,7 @@ namespace OHOS::Url {
                     HILOG_ERROR("UrlStructor:: can not get argv[0] size");
                     return nullptr;
                 }
-                type.reserve(typeSize + 1);
+                type.reserve(typeSize);
                 type.resize(typeSize);
                 if (napi_get_value_string_utf8(env, argv[0], type.data(), typeSize + 1, &typeSize) != napi_ok) {
                     HILOG_ERROR("UrlStructor:: can not get argv[0] value");
@@ -289,7 +289,6 @@ namespace OHOS::Url {
             HILOG_ERROR("URL:: can not get argv[0] size");
             return nullptr;
         }
-        input.reserve(typelen + 1);
         input.resize(typelen);
         if (napi_get_value_string_utf8(env, argv[0], input.data(), typelen + 1, &typelen) != napi_ok) {
             HILOG_ERROR("URL:: can not get argv[0] value");
@@ -315,7 +314,6 @@ namespace OHOS::Url {
             HILOG_ERROR("URL:: can not get argv[0] size");
             return nullptr;
         }
-        input.reserve(typelen + 1);
         input.resize(typelen);
         if (napi_get_value_string_utf8(env, argv[0], input.data(), typelen + 1, &typelen) != napi_ok) {
             HILOG_ERROR("URL:: can not get argv[0] value");
@@ -341,7 +339,6 @@ namespace OHOS::Url {
             HILOG_ERROR("URL:: can not get argv[0] size");
             return nullptr;
         }
-        input.reserve(typelen + 1);
         input.resize(typelen);
         if (napi_get_value_string_utf8(env, argv[0], input.data(), typelen + 1, &typelen) != napi_ok) {
             HILOG_ERROR("URL:: can not get argv[0] value");
@@ -367,7 +364,6 @@ namespace OHOS::Url {
             HILOG_ERROR("URL:: can not get argv[0] size");
             return nullptr;
         }
-        input.reserve(typelen + 1);
         input.resize(typelen);
         if (napi_get_value_string_utf8(env, argv[0], input.data(), typelen + 1, &typelen) != napi_ok) {
             HILOG_ERROR("URL:: can not get argv[0] value");
@@ -393,7 +389,6 @@ namespace OHOS::Url {
             HILOG_ERROR("URL:: can not get argv[0] size");
             return nullptr;
         }
-        input.reserve(typelen + 1);
         input.resize(typelen);
         if (napi_get_value_string_utf8(env, argv[0], input.data(), typelen + 1, &typelen) != napi_ok) {
             HILOG_ERROR("URL:: can not get argv[0] value");
@@ -422,7 +417,6 @@ namespace OHOS::Url {
             HILOG_ERROR("URL:: can not get argv[0] size");
             return nullptr;
         }
-        input.reserve(typelen + 1);
         input.resize(typelen);
         if (napi_get_value_string_utf8(env, argv[0], input.data(), typelen + 1, &typelen) != napi_ok) {
             HILOG_ERROR("URL:: can not get argv[0] value");
@@ -454,7 +448,6 @@ namespace OHOS::Url {
             HILOG_ERROR("URL:: can not get argv[0] size");
             return nullptr;
         }
-        input.reserve(typelen + 1);
         input.resize(typelen);
         if (napi_get_value_string_utf8(env, argv[0], input.data(), typelen + 1, &typelen) != napi_ok) {
             HILOG_ERROR("URL:: can not get argv[0] value");
@@ -480,7 +473,6 @@ namespace OHOS::Url {
             HILOG_ERROR("URL:: can not get argv[0] size");
             return nullptr;
         }
-        input.reserve(typelen + 1);
         input.resize(typelen);
         if (napi_get_value_string_utf8(env, argv[0], input.data(), typelen + 1, &typelen) != napi_ok) {
             HILOG_ERROR("URL:: can not get argv[0] value");
@@ -506,7 +498,6 @@ namespace OHOS::Url {
             HILOG_ERROR("URL:: can not get argv[0] size");
             return nullptr;
         }
-        input.reserve(typelen + 1);
         input.resize(typelen);
         if (napi_get_value_string_utf8(env, argv[0], input.data(), typelen + 1, &typelen) != napi_ok) {
             HILOG_ERROR("URL:: can not get argv[0] value");
@@ -532,7 +523,6 @@ namespace OHOS::Url {
             HILOG_ERROR("URL:: can not get argv[0] size");
             return nullptr;
         }
-        input.reserve(typelen + 1);
         input.resize(typelen);
         if (napi_get_value_string_utf8(env, argv[0], input.data(), typelen + 1, &typelen) != napi_ok) {
             HILOG_ERROR("URL:: can not get argv[0] value");
@@ -558,7 +548,6 @@ namespace OHOS::Url {
             HILOG_ERROR("URL:: can not get argv[0] size");
             return nullptr;
         }
-        input.reserve(typelen + 1);
         input.resize(typelen);
         if (napi_get_value_string_utf8(env, argv[0], input.data(), typelen + 1, &typelen) != napi_ok) {
             HILOG_ERROR("URL:: can not get argv[0] value");
@@ -617,7 +606,6 @@ namespace OHOS::Url {
             }
             if (arraySize > 0) {
                 std::string cstr = "";
-                cstr.reserve(arraySize + 1);
                 cstr.resize(arraySize);
                 if (napi_get_value_string_utf8(env, napiStr, cstr.data(), arraySize + 1, &arraySize) != napi_ok) {
                     HILOG_ERROR("URLSearchParams:: can not get name value");
@@ -822,7 +810,6 @@ namespace OHOS::Url {
             HILOG_ERROR("URLSearchParams:: can not get argv[0] size");
             return nullptr;
         }
-        input.reserve(typelen + 1);
         input.resize(typelen);
         if (napi_get_value_string_utf8(env, argv[0], input.data(), typelen + 1, &typelen) != napi_ok) {
             HILOG_ERROR("URLSearchParams:: can not get argv[0] value");
diff --git a/js_api_module/url/test/test_napi.cpp b/js_api_module/url/test/test_napi.cpp
index d2f4db8707319085ff958dd49bfea6132ec26121..d1d858b490d0764c4fd891f0e23f9c4fcd8dcc21 100644
--- a/js_api_module/url/test/test_napi.cpp
+++ b/js_api_module/url/test/test_napi.cpp
@@ -3439,223 +3439,4 @@ HWTEST_F(NativeEngineTest, testUrlParamsComprehensive001, testing::ext::TestSize
     
     DealNapiStrValue(env, params.IterByKeys(env), output);
     ASSERT_STREQ(output.c_str(), "");
-}
-
-HWTEST_F(NativeEngineTest, testUrlModule009, testing::ext::TestSize.Level0)
-{
-    napi_env env = (napi_env)engine_;
-    napi_value exports = nullptr;
-    napi_create_object(env, &exports);
-    OHOS::Url::Init(env, exports);
-    napi_value urlClass = nullptr;
-    napi_value constructorArgs[1] =  { 0 };
-    std::string input = "http://username:password@www.testut.com:99/path/path?query#fagment";
-    napi_create_string_utf8(env, input.c_str(), input.size(), &constructorArgs[0]);
-    napi_get_named_property(env, exports, "Url", &urlClass);
-    napi_value instance = nullptr;
-    napi_new_instance(env, urlClass, 1, constructorArgs, &instance);
-
-    std::string input1 = "http11:";
-    napi_value newValue = nullptr;
-    napi_create_string_utf8(env, input1.c_str(), input1.size(), &newValue);
-    napi_set_named_property(env, instance, "protocol", newValue);
-    napi_value urlProperty = nullptr;
-    napi_get_named_property(env, instance, "protocol", &urlProperty);
-    std::string res = GetStringUtf8(env, urlProperty);
-    ASSERT_STREQ(res.c_str(), "http:");
-
-    input1 = "/pathda/fanah";
-    newValue = nullptr;
-    napi_create_string_utf8(env, input1.c_str(), input1.size(), &newValue);
-    napi_set_named_property(env, instance, "pathname", newValue);
-    urlProperty = nullptr;
-    napi_get_named_property(env, instance, "pathname", &urlProperty);
-    res = GetStringUtf8(env, urlProperty);
-    ASSERT_STREQ(res.c_str(), "/pathda/fanah");
-
-    input1 = "168";
-    newValue = nullptr;
-    napi_create_string_utf8(env, input1.c_str(), input1.size(), &newValue);
-    napi_set_named_property(env, instance, "port", newValue);
-    urlProperty = nullptr;
-    napi_get_named_property(env, instance, "port", &urlProperty);
-    res = GetStringUtf8(env, urlProperty);
-    ASSERT_STREQ(res.c_str(), "168");
-
-    napi_value constructorArgs1[1] =  { 0 };
-    napi_create_string_utf8(env, input.c_str(), input.size(), &constructorArgs1[0]);
-    napi_value hrefFn = nullptr;
-    napi_get_named_property(env, instance, "href", &hrefFn);
-    napi_value result1 = nullptr;
-    napi_call_function(env, instance, hrefFn, 1, constructorArgs1, &result1);
-
-    urlProperty = nullptr;
-    napi_get_named_property(env, instance, "port", &urlProperty);
-    res = GetStringUtf8(env, urlProperty);
-    ASSERT_STREQ(res.c_str(), "99");
-}
-
-HWTEST_F(NativeEngineTest, testUrlModule010, testing::ext::TestSize.Level0)
-{
-    napi_env env = (napi_env)engine_;
-    napi_value exports = nullptr;
-    napi_create_object(env, &exports);
-    OHOS::Url::Init(env, exports);
-    napi_value urlClass = nullptr;
-    napi_value constructorArgs[1] =  { 0 };
-    std::string input = "http://username:password@www.test123.com:99/path/path?query#fagment";
-    napi_create_string_utf8(env, input.c_str(), input.size(), &constructorArgs[0]);
-    napi_get_named_property(env, exports, "Url", &urlClass);
-    napi_value instance = nullptr;
-    napi_new_instance(env, urlClass, 1, constructorArgs, &instance);
-
-    std::string input1 = "www.example123.com";
-    napi_value newValue = nullptr;
-    napi_create_string_utf8(env, input1.c_str(), input1.size(), &newValue);
-    napi_set_named_property(env, instance, "hostname", newValue);
-    napi_value urlProperty = nullptr;
-    napi_get_named_property(env, instance, "hostname", &urlProperty);
-    std::string res = GetStringUtf8(env, urlProperty);
-    ASSERT_STREQ(res.c_str(), "www.example123.com");
-
-    input1 = "query1=banf";
-    newValue = nullptr;
-    napi_create_string_utf8(env, input1.c_str(), input1.size(), &newValue);
-    napi_set_named_property(env, instance, "search", newValue);
-    urlProperty = nullptr;
-    napi_get_named_property(env, instance, "search", &urlProperty);
-    res = GetStringUtf8(env, urlProperty);
-    ASSERT_STREQ(res.c_str(), "?query1=banf");
-
-    input1 = "asfee1s";
-    newValue = nullptr;
-    napi_create_string_utf8(env, input1.c_str(), input1.size(), &newValue);
-    napi_set_named_property(env, instance, "username", newValue);
-    urlProperty = nullptr;
-    napi_get_named_property(env, instance, "username", &urlProperty);
-    res = GetStringUtf8(env, urlProperty);
-    ASSERT_STREQ(res.c_str(), "asfee1s");
-}
-
-HWTEST_F(NativeEngineTest, testUrlModule011, testing::ext::TestSize.Level0)
-{
-    napi_env env = (napi_env)engine_;
-    napi_value exports = nullptr;
-    napi_create_object(env, &exports);
-    OHOS::Url::Init(env, exports);
-    napi_value urlClass = nullptr;
-    napi_value constructorArgs[1] =  { 0 };
-    std::string input = "http://username:password@www.test776.com:155/path/path?query#fagment";
-    napi_create_string_utf8(env, input.c_str(), input.size(), &constructorArgs[0]);
-    napi_get_named_property(env, exports, "Url", &urlClass);
-    napi_value instance = nullptr;
-    napi_new_instance(env, urlClass, 1, constructorArgs, &instance);
-
-    std::string input1 = "pass123";
-    napi_value newValue = nullptr;
-    napi_create_string_utf8(env, input1.c_str(), input1.size(), &newValue);
-    napi_set_named_property(env, instance, "password", newValue);
-    napi_value urlProperty = nullptr;
-    napi_get_named_property(env, instance, "password", &urlProperty);
-    std::string res = GetStringUtf8(env, urlProperty);
-    ASSERT_STREQ(res.c_str(), "pass123");
-
-    input1 = "www.test.com:117";
-    newValue = nullptr;
-    napi_create_string_utf8(env, input1.c_str(), input1.size(), &newValue);
-    napi_set_named_property(env, instance, "host", newValue);
-    urlProperty = nullptr;
-    napi_get_named_property(env, instance, "host", &urlProperty);
-    res = GetStringUtf8(env, urlProperty);
-    ASSERT_STREQ(res.c_str(), "www.test.com:117");
-
-    input1 = "fagsafd";
-    newValue = nullptr;
-    napi_create_string_utf8(env, input1.c_str(), input1.size(), &newValue);
-    napi_set_named_property(env, instance, "hash", newValue);
-    urlProperty = nullptr;
-    napi_get_named_property(env, instance, "hash", &urlProperty);
-    res = GetStringUtf8(env, urlProperty);
-    ASSERT_STREQ(res.c_str(), "#fagsafd");
-}
-
-HWTEST_F(NativeEngineTest, testUrlFullUpdate002, testing::ext::TestSize.Level0)
-{
-    OHOS::Url::URL url("http://test.com/newpath?q=1#old");
-    std::string output;
-    napi_env env = (napi_env)engine_;
-    
-    url.SetHostname("newhost11.org");
-    DealNapiStrValue(env, url.GetHostname(env), output);
-    ASSERT_STREQ(output.c_str(), "newhost11.org");
-    
-    url.SetPath("/new/path/resourceqq");
-    DealNapiStrValue(env, url.GetPath(env), output);
-    ASSERT_STREQ(output.c_str(), "/new/path/resourceqq");
-    
-    url.SetSearch("kk=val1");
-    DealNapiStrValue(env, url.GetSearch(env), output);
-    ASSERT_STREQ(output.c_str(), "?kk=val1");
-    
-    url.SetFragment("new-Fragment");
-    DealNapiStrValue(env, url.GetFragment(env), output);
-    ASSERT_STREQ(output.c_str(), "#new-Fragment");
-}
-
-HWTEST_F(NativeEngineTest, testUrlParamsAppend002, testing::ext::TestSize.Level0)
-{
-    OHOS::Url::URLSearchParams params = OHOS::Url::URLSearchParams();
-    napi_env env = (napi_env)engine_;
-    napi_value key = StrToNapiValue(env, "kk1");
-    napi_value val = StrToNapiValue(env, "valrr");
-    params.Append(env, key, val);
-    
-    napi_value query = StrToNapiValue(env, "kk1");
-    std::string output;
-    DealNapiStrValue(env, params.Get(env, query), output);
-    ASSERT_STREQ(output.c_str(), "valrr");
-}
-
-HWTEST_F(NativeEngineTest, testUrlParamsDelete004, testing::ext::TestSize.Level0)
-{
-    OHOS::Url::URLSearchParams params = OHOS::Url::URLSearchParams();
-    napi_env env = (napi_env)engine_;
-    napi_value key = StrToNapiValue(env, "token112");
-    napi_value val = StrToNapiValue(env, "abc123");
-    params.Append(env, key, val);
-    bool value = false;
-    napi_get_value_bool(env, params.IsHas(env, key), &value);
-    ASSERT_TRUE(value);
-    params.Delete(env, key);
-    napi_get_value_bool(env, params.IsHas(env, key), &value);
-    ASSERT_FALSE(value);
-}
-
-HWTEST_F(NativeEngineTest, testUrlParamsGetAll003, testing::ext::TestSize.Level0)
-{
-    OHOS::Url::URLSearchParams params = OHOS::Url::URLSearchParams();
-    napi_env env = (napi_env)engine_;
-    napi_value key = StrToNapiValue(env, "strnumber");
-    
-    params.Append(env, key, StrToNapiValue(env, "one"));
-    params.Append(env, key, StrToNapiValue(env, "two"));
-    params.Append(env, key, StrToNapiValue(env, "three"));
-    
-    std::string output;
-    DealNapiStrValue(env, params.Get(env, key), output);
-    ASSERT_STREQ(output.c_str(), "one");
-}
-
-HWTEST_F(NativeEngineTest, testUrlParamsSet003, testing::ext::TestSize.Level0)
-{
-    OHOS::Url::URLSearchParams params = OHOS::Url::URLSearchParams();
-    napi_env env = (napi_env)engine_;
-    napi_value key = StrToNapiValue(env, "number");
-    
-    params.Append(env, key, StrToNapiValue(env, "100"));
-    params.Set(env, key, StrToNapiValue(env, "2000"));
-    
-    std::string output;
-    DealNapiStrValue(env, params.Get(env, key), output);
-    ASSERT_STREQ(output.c_str(), "2000");
 }
\ No newline at end of file
diff --git a/js_sys_module/dfx/native_module_dfx.cpp b/js_sys_module/dfx/native_module_dfx.cpp
index a9d3ada5cee5888a352d88b3fe1eba057cc38ca2..1e7ad666d113c7ed4c2861a86107d8d4537bf9c4 100644
--- a/js_sys_module/dfx/native_module_dfx.cpp
+++ b/js_sys_module/dfx/native_module_dfx.cpp
@@ -101,7 +101,7 @@ namespace OHOS::JsSysModule::Dfx {
             HILOG_ERROR("can not get argv size");
             return nullptr;
         }
-        tempStr.reserve(tempStrsize + 1);
+        tempStr.reserve(tempStrsize);
         tempStr.resize(tempStrsize);
         if (napi_get_value_string_utf8(env, argv, tempStr.data(), tempStrsize + 1, &tempStrsize) != napi_ok) {
             HILOG_ERROR("can not get argv value");
diff --git a/js_util_module/util/js_uuid.cpp b/js_util_module/util/js_uuid.cpp
index 41441b7c863c4d36ae5e108e009679bd9e170219..8d9c58e3056c15faf526dc957e6d930d16fe895b 100644
--- a/js_util_module/util/js_uuid.cpp
+++ b/js_util_module/util/js_uuid.cpp
@@ -208,7 +208,6 @@ napi_value DoParseUUID(napi_env env, napi_value src)
         HILOG_ERROR("DoParseUUID:: can not get src size");
         return nullptr;
     }
-    buffer.reserve(bufferSize + 1);
     buffer.resize(bufferSize);
     status = napi_get_value_string_utf8(env, src, buffer.data(), bufferSize + 1, &bufferSize);
     if (status != napi_ok) {
diff --git a/js_util_module/util/native_module_util.cpp b/js_util_module/util/native_module_util.cpp
index e3db10b3d2eff124cb3b03a3a7927e4e0445e54a..4319d78ace65a44ac817e717bc345cda81d74a74 100644
--- a/js_util_module/util/native_module_util.cpp
+++ b/js_util_module/util/native_module_util.cpp
@@ -224,7 +224,7 @@ namespace OHOS::Util {
                 FreeMemory(argv);
                 return nullptr;
             }
-            format.reserve(formatsize + 1);
+            format.reserve(formatsize);
             format.resize(formatsize);
             if (napi_get_value_string_utf8(env, argv[0], format.data(), formatsize + 1, &formatsize) != napi_ok) {
                 HILOG_ERROR("Printf:: can not get argv[0] value");
@@ -240,7 +240,7 @@ namespace OHOS::Util {
                     FreeMemory(argv);
                     return nullptr;
                 }
-                valueString.reserve(valuesize + 1);
+                valueString.reserve(valuesize);
                 valueString.resize(valuesize);
                 if (napi_get_value_string_utf8(env, argv[i], valueString.data(),
                                                valuesize + 1, &valuesize) != napi_ok) {
@@ -578,9 +578,7 @@ namespace OHOS::Util {
                     HILOG_ERROR("TextEncoder:: can not get src size");
                     return nullptr;
                 }
-                std::string buffer = "";
-                buffer.reserve(bufferSize + 1);
-                buffer.resize(bufferSize, '\0');
+                std::string buffer(bufferSize, '\0');
                 if (napi_get_value_string_utf8(env, src, buffer.data(), bufferSize + 1, &bufferSize) != napi_ok) {
                     HILOG_ERROR("TextEncoder:: can not get src value");
                     return nullptr;
@@ -1602,7 +1600,7 @@ namespace OHOS::Util {
                     return nullptr;
                 }
                 std::string buffer = "";
-                buffer.reserve(bufferSize + 1);
+                buffer.reserve(bufferSize);
                 buffer.resize(bufferSize);
                 if (napi_get_value_string_utf8(env, argv, buffer.data(), bufferSize + 1, &bufferSize) != napi_ok) {
                     HILOG_ERROR("StringDecoder:: can not get argv value");
diff --git a/js_util_module/util/test/test_uuid.cpp b/js_util_module/util/test/test_uuid.cpp
index 26b13f703d820ff02f3e32a4155a553cbb10bdde..8042e60b41ef790a8f05f6c4f5e7aa938479d1d3 100644
--- a/js_util_module/util/test/test_uuid.cpp
+++ b/js_util_module/util/test/test_uuid.cpp
@@ -1560,23 +1560,4 @@ HWTEST_F(NativeEngineTest, DoParseUUIDTest085, testing::ext::TestSize.Level0)
     napi_value resultBuffer = nullptr;
     napi_get_typedarray_info(env, arr, &type, &length, &resultData, &resultBuffer, &byteOffset);
     ASSERT_EQ(length, 16);
-}
-
-/* @tc.name: DoParseUUIDTest086
- * @tc.desc: Parse a UUID from the string standard representation as described in the RFC 4122 version 4.
- * @tc.type: FUNC
- */
-HWTEST_F(NativeEngineTest, DoParseUUIDTest086, testing::ext::TestSize.Level0)
-{
-    napi_env env = (napi_env)engine_;
-    napi_value src = nullptr;
-    napi_create_string_utf8(env, "84bdf796-65cc-4755-9b89-d6218d101186", NAPI_AUTO_LENGTH, &src);
-    napi_value arr = OHOS::Util::DoParseUUID(env, src);
-    napi_typedarray_type type = napi_int8_array;
-    size_t byteOffset = 0;
-    size_t length = 0;
-    void* resultData = nullptr;
-    napi_value resultBuffer = nullptr;
-    napi_get_typedarray_info(env, arr, &type, &length, &resultData, &resultBuffer, &byteOffset);
-    ASSERT_EQ(length, 16);
 }
\ No newline at end of file
diff --git a/platform/default/util_helper.cpp b/platform/default/util_helper.cpp
index bc3c556982929c64fcabdedd9f2dba46881bfd76..7e5782eea8803bfc6de46f6dd41fd04a24748afc 100644
--- a/platform/default/util_helper.cpp
+++ b/platform/default/util_helper.cpp
@@ -82,7 +82,6 @@ void EncodeIntoChinese(napi_env env, napi_value src, std::string encoding, std::
     std::string input = "";
     size_t inputSize = 0;
     napi_get_value_string_utf8(env, src, nullptr, 0, &inputSize); // 0:buffer size
-    input.reserve(inputSize + 1);
     input.resize(inputSize);
     napi_get_value_string_utf8(env, src, input.data(), inputSize + 1, &inputSize);
     buffer = UtilPlugin::EncodeIntoChinese(input, encoding);
diff --git a/platform/ohos/util_helper.cpp b/platform/ohos/util_helper.cpp
index 5c44a0e7fdaa7fc04e5347a8725dcc2d3aaea07b..4e5eb7dda6088671a1f0a34356c99ebe946c934b 100644
--- a/platform/ohos/util_helper.cpp
+++ b/platform/ohos/util_helper.cpp
@@ -318,7 +318,6 @@ namespace Commonlibrary::Platform {
             HILOG_ERROR("TextEncoder:: can not get src size");
             return u"";
         }
-        buffer.reserve(bufferSize + 1);
         buffer.resize(bufferSize);
         if (napi_get_value_string_utf8(env, src, buffer.data(), bufferSize + 1, &bufferSize) != napi_ok) {
             HILOG_ERROR("TextEncoder:: can not get src value");