diff --git a/device/plugins/native_hook/test/fuzztest/hookinit_fuzzer/project.xml b/device/plugins/native_hook/test/fuzztest/hookinit_fuzzer/project.xml
index 741c1d5dfdd17bf5ff51bef0c389bacd9b14d105..ff1fff9f1338c4d13431b6e8bea0e4f86f07ee89 100644
--- a/device/plugins/native_hook/test/fuzztest/hookinit_fuzzer/project.xml
+++ b/device/plugins/native_hook/test/fuzztest/hookinit_fuzzer/project.xml
@@ -18,7 +18,7 @@
     <!-- maximum length of a test input -->
     <max_len>1000</max_len>
     <!-- maximum total time in seconds to run the fuzzer -->
-    <max_total_time>300</max_total_time>
+    <max_total_time>120</max_total_time>
     <!-- memory usage limit in Mb -->
     <rss_limit_mb>4096</rss_limit_mb>
   </fuzztest>
diff --git a/device/plugins/native_hook/test/fuzztest/hookmalloc_fuzzer/hookmalloc_fuzzer.cpp b/device/plugins/native_hook/test/fuzztest/hookmalloc_fuzzer/hookmalloc_fuzzer.cpp
index bc0da35e7677629da52c52e9ee13cb77acb47409..26c8983aee9d9c9d815d9d019645d4a9684b576c 100644
--- a/device/plugins/native_hook/test/fuzztest/hookmalloc_fuzzer/hookmalloc_fuzzer.cpp
+++ b/device/plugins/native_hook/test/fuzztest/hookmalloc_fuzzer/hookmalloc_fuzzer.cpp
@@ -17,6 +17,7 @@
 
 namespace OHOS {
 constexpr unsigned int WAIT_THREAD_TIME = 3;
+constexpr size_t MAX_MALLOC_SIZE = 1024 * 1024 * 1024; // bigger may over rss litmit
 bool FuzzMallocHookTest(const uint8_t* data, size_t size)
 {
     if (data == nullptr || size == 0) {
@@ -24,7 +25,7 @@ bool FuzzMallocHookTest(const uint8_t* data, size_t size)
     }
 
     FuzzedDataProvider provider(data, size);
-    auto sizeHook = provider.ConsumeIntegral<size_t>();
+    auto sizeHook = provider.ConsumeIntegral<size_t>() % MAX_MALLOC_SIZE;
     ohos_malloc_hook_initialize(&__libc_malloc_default_dispatch, nullptr, nullptr);
     ohos_malloc_hook_on_start(nullptr);
 
diff --git a/device/plugins/native_hook/test/fuzztest/hookmalloc_fuzzer/project.xml b/device/plugins/native_hook/test/fuzztest/hookmalloc_fuzzer/project.xml
index 741c1d5dfdd17bf5ff51bef0c389bacd9b14d105..ff1fff9f1338c4d13431b6e8bea0e4f86f07ee89 100644
--- a/device/plugins/native_hook/test/fuzztest/hookmalloc_fuzzer/project.xml
+++ b/device/plugins/native_hook/test/fuzztest/hookmalloc_fuzzer/project.xml
@@ -18,7 +18,7 @@
     <!-- maximum length of a test input -->
     <max_len>1000</max_len>
     <!-- maximum total time in seconds to run the fuzzer -->
-    <max_total_time>300</max_total_time>
+    <max_total_time>120</max_total_time>
     <!-- memory usage limit in Mb -->
     <rss_limit_mb>4096</rss_limit_mb>
   </fuzztest>
diff --git a/device/plugins/native_hook/test/fuzztest/hookmiscdata_fuzzer/project.xml b/device/plugins/native_hook/test/fuzztest/hookmiscdata_fuzzer/project.xml
index 741c1d5dfdd17bf5ff51bef0c389bacd9b14d105..ff1fff9f1338c4d13431b6e8bea0e4f86f07ee89 100644
--- a/device/plugins/native_hook/test/fuzztest/hookmiscdata_fuzzer/project.xml
+++ b/device/plugins/native_hook/test/fuzztest/hookmiscdata_fuzzer/project.xml
@@ -18,7 +18,7 @@
     <!-- maximum length of a test input -->
     <max_len>1000</max_len>
     <!-- maximum total time in seconds to run the fuzzer -->
-    <max_total_time>300</max_total_time>
+    <max_total_time>120</max_total_time>
     <!-- memory usage limit in Mb -->
     <rss_limit_mb>4096</rss_limit_mb>
   </fuzztest>
diff --git a/device/plugins/native_hook/test/fuzztest/hookprctl_fuzzer/project.xml b/device/plugins/native_hook/test/fuzztest/hookprctl_fuzzer/project.xml
index 741c1d5dfdd17bf5ff51bef0c389bacd9b14d105..ff1fff9f1338c4d13431b6e8bea0e4f86f07ee89 100644
--- a/device/plugins/native_hook/test/fuzztest/hookprctl_fuzzer/project.xml
+++ b/device/plugins/native_hook/test/fuzztest/hookprctl_fuzzer/project.xml
@@ -18,7 +18,7 @@
     <!-- maximum length of a test input -->
     <max_len>1000</max_len>
     <!-- maximum total time in seconds to run the fuzzer -->
-    <max_total_time>300</max_total_time>
+    <max_total_time>120</max_total_time>
     <!-- memory usage limit in Mb -->
     <rss_limit_mb>4096</rss_limit_mb>
   </fuzztest>
diff --git a/device/plugins/native_hook/test/fuzztest/hookset_fuzzer/project.xml b/device/plugins/native_hook/test/fuzztest/hookset_fuzzer/project.xml
index 741c1d5dfdd17bf5ff51bef0c389bacd9b14d105..ff1fff9f1338c4d13431b6e8bea0e4f86f07ee89 100644
--- a/device/plugins/native_hook/test/fuzztest/hookset_fuzzer/project.xml
+++ b/device/plugins/native_hook/test/fuzztest/hookset_fuzzer/project.xml
@@ -18,7 +18,7 @@
     <!-- maximum length of a test input -->
     <max_len>1000</max_len>
     <!-- maximum total time in seconds to run the fuzzer -->
-    <max_total_time>300</max_total_time>
+    <max_total_time>120</max_total_time>
     <!-- memory usage limit in Mb -->
     <rss_limit_mb>4096</rss_limit_mb>
   </fuzztest>