diff --git a/base/test/fuzztest/ashmem_fuzzer/ashmem_fuzzer.cpp b/base/test/fuzztest/ashmem_fuzzer/ashmem_fuzzer.cpp
index 1c5e34b3be828bfc3c6fe724a3aacc48fa359980..62f2e7ca5c10653bf51d036fc11b4a849bd6b593 100644
--- a/base/test/fuzztest/ashmem_fuzzer/ashmem_fuzzer.cpp
+++ b/base/test/fuzztest/ashmem_fuzzer/ashmem_fuzzer.cpp
@@ -38,24 +38,20 @@ void AshmemTestFunc(FuzzedDataProvider* dataProvider)
     }
 
     string memoryContent = dataProvider->ConsumeRandomLengthString(MAX_MEMORY_SIZE);
-    ret = ashmem->WriteToAshmem(memoryContent.c_str(), sizeof(memoryContent), 0);
+    ret = ashmem->WriteToAshmem(memoryContent.c_str(), memoryContent.size(), 0);
     if (ret != true) {
         return;
     }
 
     string memoryContent2 = dataProvider->ConsumeRandomLengthString(MAX_MEMORY_SIZE);
-    ret = ashmem->WriteToAshmem(memoryContent2.c_str(), sizeof(memoryContent2), sizeof(memoryContent2));
+    ret = ashmem->WriteToAshmem(memoryContent2.c_str(), memoryContent2.size(), memoryContent.size());
     if (ret != true) {
         return;
     }
 
-    auto readData = ashmem->ReadFromAshmem(sizeof(memoryContent), 0);
+    ashmem->ReadFromAshmem(memoryContent.size(), 0);
 
-    const char *readContent = reinterpret_cast<const char *>(readData);
-
-    readData = ashmem->ReadFromAshmem(sizeof(memoryContent2), sizeof(memoryContent2));
-
-    readContent = reinterpret_cast<const char *>(readData);
+    ashmem->ReadFromAshmem(memoryContent2.size(), memoryContent.size());
 
     int prot = dataProvider->ConsumeIntegral<int>();
     ashmem->SetProtection(prot);
diff --git a/base/test/fuzztest/thread_fuzzer/thread_fuzzer.cpp b/base/test/fuzztest/thread_fuzzer/thread_fuzzer.cpp
index ddeef6a9ea29ea42c2f542f335e3061d31698ddd..5bd82e01749399db6566549a0266d03c8ed77f20 100644
--- a/base/test/fuzztest/thread_fuzzer/thread_fuzzer.cpp
+++ b/base/test/fuzztest/thread_fuzzer/thread_fuzzer.cpp
@@ -28,7 +28,7 @@ using namespace std;
 
 namespace OHOS {
 const std::string& DEFAULT_THREAD_NAME = "default";
-const int MAX_STACK_SIZE = 4096;
+const int MAX_STACK_SIZE = 1024;
 const int MAX_PRIORITY = 10;
 using ThreadRunFunc = bool (*)(int& data);