diff --git a/interfaces/kits/js/src/mod_fs/common_func.cpp b/interfaces/kits/js/src/mod_fs/common_func.cpp
index 3b10d60e20a1d97af077f4ae7744e41e7b7fc0ed..c1d41a3c2bcfb50bb4655e20344318dd59b1e0b9 100644
--- a/interfaces/kits/js/src/mod_fs/common_func.cpp
+++ b/interfaces/kits/js/src/mod_fs/common_func.cpp
@@ -368,27 +368,6 @@ string CommonFunc::GetModeFromFlags(unsigned int flags)
     return mode;
 }
 
-string CommonFunc::Decode(const std::string &uri)
-{
-    std::ostringstream outPutStream;
-    const int32_t encodeLen = 2;
-    size_t index = 0;
-    while (index < uri.length()) {
-        if (uri[index] == '%') {
-            int hex = 0;
-            std::istringstream inputStream(uri.substr(index + 1, encodeLen));
-            inputStream >> std::hex >> hex;
-            outPutStream << static_cast<char>(hex);
-            index += encodeLen + 1;
-        } else {
-            outPutStream << uri[index];
-            index++;
-        }
-    }
-
-    return outPutStream.str();
-}
-
 #if !defined(WIN_PLATFORM) && !defined(IOS_PLATFORM) && !defined(CROSS_PLATFORM)
 bool IsNumeric(const string &str)
 {
diff --git a/interfaces/kits/js/src/mod_fs/common_func.h b/interfaces/kits/js/src/mod_fs/common_func.h
index d536abaaeff4aa38562fd4e293c7e29c7026a0a0..2f01f57628580a68d3877d2407e31bae19ae1fe7 100644
--- a/interfaces/kits/js/src/mod_fs/common_func.h
+++ b/interfaces/kits/js/src/mod_fs/common_func.h
@@ -106,7 +106,6 @@ struct CommonFunc {
                                                                                              napi_value dstPath);
     static void fs_req_cleanup(uv_fs_t* req);
     static std::string GetModeFromFlags(unsigned int flags);
-    static std::string Decode(const std::string &uri);
 #if !defined(WIN_PLATFORM) && !defined(IOS_PLATFORM) && !defined(CROSS_PLATFORM)
     static bool GetAndCheckUserId(Uri* uri, std::string &userId);
     static bool IsSystemApp();