diff --git a/test/fuzztest/externalfileaccess_fuzzer/external_file_access_fuzzer.cpp b/test/fuzztest/externalfileaccess_fuzzer/external_file_access_fuzzer.cpp
index 8df82c5b..9c185dff 100644
--- a/test/fuzztest/externalfileaccess_fuzzer/external_file_access_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccess_fuzzer/external_file_access_fuzzer.cpp
@@ -228,7 +228,8 @@ bool MkdirFuzzTest(const uint8_t* data, size_t size)
     for (size_t i = 0; i < info.size(); i++) {
         Uri parentUri(info[i].uri);
         Uri newDirUri("");
-        result = helper->Mkdir(parentUri, "MkdirFuzzTest", newDirUri);
+        std::string dirName(reinterpret_cast<const char*>(data), size);
+        result = helper->Mkdir(parentUri, dirName, newDirUri);
         if (result != OHOS::FileAccessFwk::ERR_OK) {
             HILOG_ERROR("Mkdir failed. ret : %{public}d", result);
             return false;
@@ -272,14 +273,18 @@ bool MoveFuzzTest(const uint8_t* data, size_t size)
         Uri parentUri(info[i].uri);
         Uri newDirUriTest1("");
         Uri newDirUriTest2("");
-        int result1 = helper->Mkdir(parentUri, "test1", newDirUriTest1);
-        int result2 = helper->Mkdir(parentUri, "test2", newDirUriTest2);
+        size_t len = size >> 2;
+        std::string test1(reinterpret_cast<const char*>(data), len);
+        std::string test2(reinterpret_cast<const char*>(data + len), len);
+        int result1 = helper->Mkdir(parentUri, test1, newDirUriTest1);
+        int result2 = helper->Mkdir(parentUri, test2, newDirUriTest2);
         if (result1 != OHOS::FileAccessFwk::ERR_OK || result2 != OHOS::FileAccessFwk::ERR_OK) {
             HILOG_ERROR("Mkdir failed. ret : %{public}d, %{public}d", result1, result2);
             return false;
         }
         Uri testUri("");
-        result = helper->CreateFile(newDirUriTest1, "test.txt", testUri);
+        std::string test(reinterpret_cast<const char*>(data + len + len), len);
+        result = helper->CreateFile(newDirUriTest1, test, testUri);
         if (result != OHOS::FileAccessFwk::ERR_OK) {
             HILOG_ERROR("CreateFile failed. ret : %{public}d", result);
             return false;
@@ -321,7 +326,8 @@ bool RenameFuzzTest(const uint8_t* data, size_t size)
             return false;
         }
         Uri renameUri("");
-        result = helper->Rename(newDirUriTest, "testRename", renameUri);
+        std::string testRename(reinterpret_cast<const char*>(data), size);
+        result = helper->Rename(newDirUriTest, testRename, renameUri);
         if (result != OHOS::FileAccessFwk::ERR_OK) {
             HILOG_ERROR("Rename failed. ret : %{public}d", result);
             return false;
diff --git a/test/fuzztest/externalfileaccessaccess_fuzzer/externalfileaccessaccess_fuzzer.cpp b/test/fuzztest/externalfileaccessaccess_fuzzer/externalfileaccessaccess_fuzzer.cpp
index 401cb1f4..8ad9d3ea 100644
--- a/test/fuzztest/externalfileaccessaccess_fuzzer/externalfileaccessaccess_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccessaccess_fuzzer/externalfileaccessaccess_fuzzer.cpp
@@ -37,13 +37,6 @@ using namespace std;
 using namespace OHOS;
 using namespace FileAccessFwk;
 using namespace AbilityRuntime;
-constexpr size_t FOO_MAX_LEN = 1024;
-constexpr size_t U32_AT_SIZE = 4;
-
-
-enum {
-    TOKEN_INDEX_ONE = 0,
-};
 
 void SetNativeToken()
 {
@@ -71,14 +64,14 @@ void SetNativeToken()
     OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
 }
 
-bool ExternalFileAccessAccessFuzzTest(std::unique_ptr<char[]> data, size_t size)
+bool ExternalFileAccessAccessFuzzTest(const uint8_t *data, size_t size)
 {
     SetNativeToken();
     // CMD_ACCESS
     uint32_t code = 14;
     MessageParcel datas;
     datas.WriteInterfaceToken(FileAccessExtStub::GetDescriptor());
-    datas.WriteBuffer(data.get(), size);
+    datas.WriteBuffer(reinterpret_cast<const char*>(data), size);
     datas.RewindRead(0);
     MessageParcel reply;
     MessageOption option;
@@ -103,22 +96,6 @@ bool ExternalFileAccessAccessFuzzTest(std::unique_ptr<char[]> data, size_t size)
 /* Fuzzer entry point */
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
-    /* Run your code on data */
-    if (data == nullptr) {
-        return 0;
-    }
-
-    /* Validate the length of size */
-    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
-        return 0;
-    }
-
-    auto str = std::make_unique<char[]>(size + 1);
-    (void)memset_s(str.get(), size + 1, 0x00, size + 1);
-    if (memcpy_s(str.get(), size, data, size) != EOK) {
-        return 0;
-    }
-
-    OHOS::ExternalFileAccessAccessFuzzTest(move(str), size);
+    OHOS::ExternalFileAccessAccessFuzzTest(data, size);
     return 0;
 }
diff --git a/test/fuzztest/externalfileaccesscreatefile_fuzzer/externalfileaccesscreatefile_fuzzer.cpp b/test/fuzztest/externalfileaccesscreatefile_fuzzer/externalfileaccesscreatefile_fuzzer.cpp
index 52a2ccaf..a030472f 100644
--- a/test/fuzztest/externalfileaccesscreatefile_fuzzer/externalfileaccesscreatefile_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccesscreatefile_fuzzer/externalfileaccesscreatefile_fuzzer.cpp
@@ -37,13 +37,6 @@ using namespace std;
 using namespace OHOS;
 using namespace FileAccessFwk;
 using namespace AbilityRuntime;
-constexpr size_t FOO_MAX_LEN = 1024;
-constexpr size_t U32_AT_SIZE = 4;
-
-
-enum {
-    TOKEN_INDEX_ONE = 0,
-};
 
 void SetNativeToken()
 {
@@ -71,14 +64,14 @@ void SetNativeToken()
     OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
 }
 
-bool ExternalFileAccessCreateFileFuzzTest(std::unique_ptr<char[]> data, size_t size)
+bool ExternalFileAccessCreateFileFuzzTest(const uint8_t *data, size_t size)
 {
     SetNativeToken();
     // CMD_CREATEILE
     uint32_t code = 2;
     MessageParcel datas;
     datas.WriteInterfaceToken(FileAccessExtStub::GetDescriptor());
-    datas.WriteBuffer(data.get(), size);
+    datas.WriteBuffer(reinterpret_cast<const char*>(data), size);
     datas.RewindRead(0);
     MessageParcel reply;
     MessageOption option;
@@ -103,22 +96,6 @@ bool ExternalFileAccessCreateFileFuzzTest(std::unique_ptr<char[]> data, size_t s
 /* Fuzzer entry point */
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
-    /* Run your code on data */
-    if (data == nullptr) {
-        return 0;
-    }
-
-    /* Validate the length of size */
-    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
-        return 0;
-    }
-
-    auto str = std::make_unique<char[]>(size + 1);
-    (void)memset_s(str.get(), size + 1, 0x00, size + 1);
-    if (memcpy_s(str.get(), size, data, size) != EOK) {
-        return 0;
-    }
-
-    OHOS::ExternalFileAccessCreateFileFuzzTest(move(str), size);
+    OHOS::ExternalFileAccessCreateFileFuzzTest(data, size);
     return 0;
 }
diff --git a/test/fuzztest/externalfileaccessdelete_fuzzer/externalfileaccessdelete_fuzzer.cpp b/test/fuzztest/externalfileaccessdelete_fuzzer/externalfileaccessdelete_fuzzer.cpp
index 845ed29a..4cd6f7f6 100644
--- a/test/fuzztest/externalfileaccessdelete_fuzzer/externalfileaccessdelete_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccessdelete_fuzzer/externalfileaccessdelete_fuzzer.cpp
@@ -37,13 +37,6 @@ using namespace std;
 using namespace OHOS;
 using namespace FileAccessFwk;
 using namespace AbilityRuntime;
-constexpr size_t FOO_MAX_LEN = 1024;
-constexpr size_t U32_AT_SIZE = 4;
-
-
-enum {
-    TOKEN_INDEX_ONE = 0,
-};
 
 void SetNativeToken()
 {
@@ -71,14 +64,14 @@ void SetNativeToken()
     OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
 }
 
-bool ExternalFileAccessDeleteFuzzTest(std::unique_ptr<char[]> data, size_t size)
+bool ExternalFileAccessDeleteFuzzTest(const uint8_t *data, size_t size)
 {
     SetNativeToken();
     // CMD_DELETE
     uint32_t code = 4;
     MessageParcel datas;
     datas.WriteInterfaceToken(FileAccessExtStub::GetDescriptor());
-    datas.WriteBuffer(data.get(), size);
+    datas.WriteBuffer(reinterpret_cast<const char*>(data), size);
     datas.RewindRead(0);
     MessageParcel reply;
     MessageOption option;
@@ -103,22 +96,6 @@ bool ExternalFileAccessDeleteFuzzTest(std::unique_ptr<char[]> data, size_t size)
 /* Fuzzer entry point */
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
-    /* Run your code on data */
-    if (data == nullptr) {
-        return 0;
-    }
-
-    /* Validate the length of size */
-    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
-        return 0;
-    }
-
-    auto str = std::make_unique<char[]>(size + 1);
-    (void)memset_s(str.get(), size + 1, 0x00, size + 1);
-    if (memcpy_s(str.get(), size, data, size) != EOK) {
-        return 0;
-    }
-
-    OHOS::ExternalFileAccessDeleteFuzzTest(move(str), size);
+    OHOS::ExternalFileAccessDeleteFuzzTest(data, size);
     return 0;
 }
diff --git a/test/fuzztest/externalfileaccessgetfileinfofromrelativepath_fuzzer/externalfileaccessgetfileinfofromrelativepath_fuzzer.cpp b/test/fuzztest/externalfileaccessgetfileinfofromrelativepath_fuzzer/externalfileaccessgetfileinfofromrelativepath_fuzzer.cpp
index e788cc2a..59180c72 100644
--- a/test/fuzztest/externalfileaccessgetfileinfofromrelativepath_fuzzer/externalfileaccessgetfileinfofromrelativepath_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccessgetfileinfofromrelativepath_fuzzer/externalfileaccessgetfileinfofromrelativepath_fuzzer.cpp
@@ -37,13 +37,6 @@ using namespace std;
 using namespace OHOS;
 using namespace FileAccessFwk;
 using namespace AbilityRuntime;
-constexpr size_t FOO_MAX_LEN = 1024;
-constexpr size_t U32_AT_SIZE = 4;
-
-
-enum {
-    TOKEN_INDEX_ONE = 0,
-};
 
 void SetNativeToken()
 {
@@ -71,14 +64,14 @@ void SetNativeToken()
     OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
 }
 
-bool ExternalFileAccessGetFileInfoFromRelativePathFuzzTest(std::unique_ptr<char[]> data, size_t size)
+bool ExternalFileAccessGetFileInfoFromRelativePathFuzzTest(const uint8_t *data, size_t size)
 {
     SetNativeToken();
     // CMD_GET_FILEINFO_FROM_RELATIVE_PATH
     uint32_t code = 17;
     MessageParcel datas;
     datas.WriteInterfaceToken(FileAccessExtStub::GetDescriptor());
-    datas.WriteBuffer(data.get(), size);
+    datas.WriteBuffer(reinterpret_cast<const char*>(data), size);
     datas.RewindRead(0);
     MessageParcel reply;
     MessageOption option;
@@ -103,22 +96,6 @@ bool ExternalFileAccessGetFileInfoFromRelativePathFuzzTest(std::unique_ptr<char[
 /* Fuzzer entry point */
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
-    /* Run your code on data */
-    if (data == nullptr) {
-        return 0;
-    }
-
-    /* Validate the length of size */
-    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
-        return 0;
-    }
-
-    auto str = std::make_unique<char[]>(size + 1);
-    (void)memset_s(str.get(), size + 1, 0x00, size + 1);
-    if (memcpy_s(str.get(), size, data, size) != EOK) {
-        return 0;
-    }
-
-    OHOS::ExternalFileAccessGetFileInfoFromRelativePathFuzzTest(move(str), size);
+    OHOS::ExternalFileAccessGetFileInfoFromRelativePathFuzzTest(data, size);
     return 0;
 }
diff --git a/test/fuzztest/externalfileaccessgetfileinfofromuri_fuzzer/externalfileaccessgetfileinfofromuri_fuzzer.cpp b/test/fuzztest/externalfileaccessgetfileinfofromuri_fuzzer/externalfileaccessgetfileinfofromuri_fuzzer.cpp
index b7182894..4a5142d3 100644
--- a/test/fuzztest/externalfileaccessgetfileinfofromuri_fuzzer/externalfileaccessgetfileinfofromuri_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccessgetfileinfofromuri_fuzzer/externalfileaccessgetfileinfofromuri_fuzzer.cpp
@@ -37,13 +37,6 @@ using namespace std;
 using namespace OHOS;
 using namespace FileAccessFwk;
 using namespace AbilityRuntime;
-constexpr size_t FOO_MAX_LEN = 1024;
-constexpr size_t U32_AT_SIZE = 4;
-
-
-enum {
-    TOKEN_INDEX_ONE = 0,
-};
 
 void SetNativeToken()
 {
@@ -71,14 +64,14 @@ void SetNativeToken()
     OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
 }
 
-bool ExternalFileAccessGetFileInfoFromUriFuzzTest(std::unique_ptr<char[]> data, size_t size)
+bool ExternalFileAccessGetFileInfoFromUriFuzzTest(const uint8_t *data, size_t size)
 {
     SetNativeToken();
     // CMD_GET_FILEINFO_FROM_URI
     uint32_t code = 16;
     MessageParcel datas;
     datas.WriteInterfaceToken(FileAccessExtStub::GetDescriptor());
-    datas.WriteBuffer(data.get(), size);
+    datas.WriteBuffer(reinterpret_cast<const char*>(data), size);
     datas.RewindRead(0);
     MessageParcel reply;
     MessageOption option;
@@ -103,22 +96,6 @@ bool ExternalFileAccessGetFileInfoFromUriFuzzTest(std::unique_ptr<char[]> data,
 /* Fuzzer entry point */
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
-    /* Run your code on data */
-    if (data == nullptr) {
-        return 0;
-    }
-
-    /* Validate the length of size */
-    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
-        return 0;
-    }
-
-    auto str = std::make_unique<char[]>(size + 1);
-    (void)memset_s(str.get(), size + 1, 0x00, size + 1);
-    if (memcpy_s(str.get(), size, data, size) != EOK) {
-        return 0;
-    }
-
-    OHOS::ExternalFileAccessGetFileInfoFromUriFuzzTest(move(str), size);
+    OHOS::ExternalFileAccessGetFileInfoFromUriFuzzTest(data, size);
     return 0;
 }
diff --git a/test/fuzztest/externalfileaccessgetroots_fuzzer/externalfileaccessgetroots_fuzzer.cpp b/test/fuzztest/externalfileaccessgetroots_fuzzer/externalfileaccessgetroots_fuzzer.cpp
index dd6855b8..028d42ea 100644
--- a/test/fuzztest/externalfileaccessgetroots_fuzzer/externalfileaccessgetroots_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccessgetroots_fuzzer/externalfileaccessgetroots_fuzzer.cpp
@@ -37,13 +37,6 @@ using namespace std;
 using namespace OHOS;
 using namespace FileAccessFwk;
 using namespace AbilityRuntime;
-constexpr size_t FOO_MAX_LEN = 1024;
-constexpr size_t U32_AT_SIZE = 4;
-
-
-enum {
-    TOKEN_INDEX_ONE = 0,
-};
 
 void SetNativeToken()
 {
@@ -71,14 +64,14 @@ void SetNativeToken()
     OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
 }
 
-bool ExternalFileAccessGetRootsFuzzTest(std::unique_ptr<char[]> data, size_t size)
+bool ExternalFileAccessGetRootsFuzzTest(const uint8_t *data, size_t size)
 {
     SetNativeToken();
     // CMD_GET_ROOTS
     uint32_t code = 13;
     MessageParcel datas;
     datas.WriteInterfaceToken(FileAccessExtStub::GetDescriptor());
-    datas.WriteBuffer(data.get(), size);
+    datas.WriteBuffer(reinterpret_cast<const char*>(data), size);
     datas.RewindRead(0);
     MessageParcel reply;
     MessageOption option;
@@ -103,22 +96,6 @@ bool ExternalFileAccessGetRootsFuzzTest(std::unique_ptr<char[]> data, size_t siz
 /* Fuzzer entry point */
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
-    /* Run your code on data */
-    if (data == nullptr) {
-        return 0;
-    }
-
-    /* Validate the length of size */
-    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
-        return 0;
-    }
-
-    auto str = std::make_unique<char[]>(size + 1);
-    (void)memset_s(str.get(), size + 1, 0x00, size + 1);
-    if (memcpy_s(str.get(), size, data, size) != EOK) {
-        return 0;
-    }
-
-    OHOS::ExternalFileAccessGetRootsFuzzTest(move(str), size);
+    OHOS::ExternalFileAccessGetRootsFuzzTest(data, size);
     return 0;
 }
diff --git a/test/fuzztest/externalfileaccesslistfile_fuzzer/externalfileaccesslistfile_fuzzer.cpp b/test/fuzztest/externalfileaccesslistfile_fuzzer/externalfileaccesslistfile_fuzzer.cpp
index 54b82d4e..3d60598a 100644
--- a/test/fuzztest/externalfileaccesslistfile_fuzzer/externalfileaccesslistfile_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccesslistfile_fuzzer/externalfileaccesslistfile_fuzzer.cpp
@@ -37,13 +37,6 @@ using namespace std;
 using namespace OHOS;
 using namespace FileAccessFwk;
 using namespace AbilityRuntime;
-constexpr size_t FOO_MAX_LEN = 1024;
-constexpr size_t U32_AT_SIZE = 4;
-
-
-enum {
-    TOKEN_INDEX_ONE = 0,
-};
 
 void SetNativeToken()
 {
@@ -71,14 +64,14 @@ void SetNativeToken()
     OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
 }
 
-bool ExternalFileAccessListFileFuzzTest(std::unique_ptr<char[]> data, size_t size)
+bool ExternalFileAccessListFileFuzzTest(const uint8_t *data, size_t size)
 {
     SetNativeToken();
     // CMD_LISTFILE
     uint32_t code = 8;
     MessageParcel datas;
     datas.WriteInterfaceToken(FileAccessExtStub::GetDescriptor());
-    datas.WriteBuffer(data.get(), size);
+    datas.WriteBuffer(reinterpret_cast<const char*>(data), size);
     datas.RewindRead(0);
     MessageParcel reply;
     MessageOption option;
@@ -103,22 +96,6 @@ bool ExternalFileAccessListFileFuzzTest(std::unique_ptr<char[]> data, size_t siz
 /* Fuzzer entry point */
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
-    /* Run your code on data */
-    if (data == nullptr) {
-        return 0;
-    }
-
-    /* Validate the length of size */
-    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
-        return 0;
-    }
-
-    auto str = std::make_unique<char[]>(size + 1);
-    (void)memset_s(str.get(), size + 1, 0x00, size + 1);
-    if (memcpy_s(str.get(), size, data, size) != EOK) {
-        return 0;
-    }
-
-    OHOS::ExternalFileAccessListFileFuzzTest(move(str), size);
+    OHOS::ExternalFileAccessListFileFuzzTest(data, size);
     return 0;
 }
diff --git a/test/fuzztest/externalfileaccessmkdir_fuzzer/externalfileaccessmkdir_fuzzer.cpp b/test/fuzztest/externalfileaccessmkdir_fuzzer/externalfileaccessmkdir_fuzzer.cpp
index a3655318..ce001e69 100644
--- a/test/fuzztest/externalfileaccessmkdir_fuzzer/externalfileaccessmkdir_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccessmkdir_fuzzer/externalfileaccessmkdir_fuzzer.cpp
@@ -37,13 +37,6 @@ using namespace std;
 using namespace OHOS;
 using namespace FileAccessFwk;
 using namespace AbilityRuntime;
-constexpr size_t FOO_MAX_LEN = 1024;
-constexpr size_t U32_AT_SIZE = 4;
-
-
-enum {
-    TOKEN_INDEX_ONE = 0,
-};
 
 void SetNativeToken()
 {
@@ -71,14 +64,14 @@ void SetNativeToken()
     OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
 }
 
-bool ExternalFileAccessMkdirFuzzTest(std::unique_ptr<char[]> data, size_t size)
+bool ExternalFileAccessMkdirFuzzTest(const uint8_t *data, size_t size)
 {
     SetNativeToken();
     // CMD_MKDIR
     uint32_t code = 3;
     MessageParcel datas;
     datas.WriteInterfaceToken(FileAccessExtStub::GetDescriptor());
-    datas.WriteBuffer(data.get(), size);
+    datas.WriteBuffer(reinterpret_cast<const char*>(data), size);
     datas.RewindRead(0);
     MessageParcel reply;
     MessageOption option;
@@ -103,22 +96,6 @@ bool ExternalFileAccessMkdirFuzzTest(std::unique_ptr<char[]> data, size_t size)
 /* Fuzzer entry point */
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
-    /* Run your code on data */
-    if (data == nullptr) {
-        return 0;
-    }
-
-    /* Validate the length of size */
-    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
-        return 0;
-    }
-
-    auto str = std::make_unique<char[]>(size + 1);
-    (void)memset_s(str.get(), size + 1, 0x00, size + 1);
-    if (memcpy_s(str.get(), size, data, size) != EOK) {
-        return 0;
-    }
-
-    OHOS::ExternalFileAccessMkdirFuzzTest(move(str), size);
+    OHOS::ExternalFileAccessMkdirFuzzTest(data, size);
     return 0;
 }
diff --git a/test/fuzztest/externalfileaccessmove_fuzzer/externalfileaccessmove_fuzzer.cpp b/test/fuzztest/externalfileaccessmove_fuzzer/externalfileaccessmove_fuzzer.cpp
index 4803ca79..e52e990e 100644
--- a/test/fuzztest/externalfileaccessmove_fuzzer/externalfileaccessmove_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccessmove_fuzzer/externalfileaccessmove_fuzzer.cpp
@@ -37,13 +37,6 @@ using namespace std;
 using namespace OHOS;
 using namespace FileAccessFwk;
 using namespace AbilityRuntime;
-constexpr size_t FOO_MAX_LEN = 1024;
-constexpr size_t U32_AT_SIZE = 4;
-
-
-enum {
-    TOKEN_INDEX_ONE = 0,
-};
 
 void SetNativeToken()
 {
@@ -71,14 +64,14 @@ void SetNativeToken()
     OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
 }
 
-bool ExternalFileAccessMoveFuzzTest(std::unique_ptr<char[]> data, size_t size)
+bool ExternalFileAccessMoveFuzzTest(const uint8_t *data, size_t size)
 {
     SetNativeToken();
     // CMD_MOVE
     uint32_t code = 5;
     MessageParcel datas;
     datas.WriteInterfaceToken(FileAccessExtStub::GetDescriptor());
-    datas.WriteBuffer(data.get(), size);
+    datas.WriteBuffer(reinterpret_cast<const char*>(data), size);
     datas.RewindRead(0);
     MessageParcel reply;
     MessageOption option;
@@ -103,22 +96,6 @@ bool ExternalFileAccessMoveFuzzTest(std::unique_ptr<char[]> data, size_t size)
 /* Fuzzer entry point */
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
-    /* Run your code on data */
-    if (data == nullptr) {
-        return 0;
-    }
-
-    /* Validate the length of size */
-    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
-        return 0;
-    }
-
-    auto str = std::make_unique<char[]>(size + 1);
-    (void)memset_s(str.get(), size + 1, 0x00, size + 1);
-    if (memcpy_s(str.get(), size, data, size) != EOK) {
-        return 0;
-    }
-
-    OHOS::ExternalFileAccessMoveFuzzTest(move(str), size);
+    OHOS::ExternalFileAccessMoveFuzzTest(data, size);
     return 0;
 }
diff --git a/test/fuzztest/externalfileaccessopenfile_fuzzer/externalfileaccessopenfile_fuzzer.cpp b/test/fuzztest/externalfileaccessopenfile_fuzzer/externalfileaccessopenfile_fuzzer.cpp
index 2b0b82ad..7065efb5 100644
--- a/test/fuzztest/externalfileaccessopenfile_fuzzer/externalfileaccessopenfile_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccessopenfile_fuzzer/externalfileaccessopenfile_fuzzer.cpp
@@ -37,13 +37,6 @@ using namespace std;
 using namespace OHOS;
 using namespace FileAccessFwk;
 using namespace AbilityRuntime;
-constexpr size_t FOO_MAX_LEN = 1024;
-constexpr size_t U32_AT_SIZE = 4;
-
-
-enum {
-    TOKEN_INDEX_ONE = 0,
-};
 
 void SetNativeToken()
 {
@@ -71,14 +64,14 @@ void SetNativeToken()
     OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
 }
 
-bool ExternalFileAccessOpenFileFuzzTest(std::unique_ptr<char[]> data, size_t size)
+bool ExternalFileAccessOpenFileFuzzTest(const uint8_t *data, size_t size)
 {
     SetNativeToken();
     // CMD_OPENFILE
     uint32_t code = 1;
     MessageParcel datas;
     datas.WriteInterfaceToken(FileAccessExtStub::GetDescriptor());
-    datas.WriteBuffer(data.get(), size);
+    datas.WriteBuffer(reinterpret_cast<const char*>(data), size);
     datas.RewindRead(0);
     MessageParcel reply;
     MessageOption option;
@@ -103,22 +96,6 @@ bool ExternalFileAccessOpenFileFuzzTest(std::unique_ptr<char[]> data, size_t siz
 /* Fuzzer entry point */
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
-    /* Run your code on data */
-    if (data == nullptr) {
-        return 0;
-    }
-
-    /* Validate the length of size */
-    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
-        return 0;
-    }
-
-    auto str = std::make_unique<char[]>(size + 1);
-    (void)memset_s(str.get(), size + 1, 0x00, size + 1);
-    if (memcpy_s(str.get(), size, data, size) != EOK) {
-        return 0;
-    }
-
-    OHOS::ExternalFileAccessOpenFileFuzzTest(move(str), size);
+    OHOS::ExternalFileAccessOpenFileFuzzTest(data, size);
     return 0;
 }
diff --git a/test/fuzztest/externalfileaccessrename_fuzzer/externalfileaccessrename_fuzzer.cpp b/test/fuzztest/externalfileaccessrename_fuzzer/externalfileaccessrename_fuzzer.cpp
index c72424bf..5b7489ca 100644
--- a/test/fuzztest/externalfileaccessrename_fuzzer/externalfileaccessrename_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccessrename_fuzzer/externalfileaccessrename_fuzzer.cpp
@@ -37,13 +37,6 @@ using namespace std;
 using namespace OHOS;
 using namespace FileAccessFwk;
 using namespace AbilityRuntime;
-constexpr size_t FOO_MAX_LEN = 1024;
-constexpr size_t U32_AT_SIZE = 4;
-
-
-enum {
-    TOKEN_INDEX_ONE = 0,
-};
 
 void SetNativeToken()
 {
@@ -71,14 +64,14 @@ void SetNativeToken()
     OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
 }
 
-bool ExternalFileAccessRenameFuzzTest(std::unique_ptr<char[]> data, size_t size)
+bool ExternalFileAccessRenameFuzzTest(const uint8_t *data, size_t size)
 {
     SetNativeToken();
     // CMD_RENAME
     uint32_t code = 7;
     MessageParcel datas;
     datas.WriteInterfaceToken(FileAccessExtStub::GetDescriptor());
-    datas.WriteBuffer(data.get(), size);
+    datas.WriteBuffer(reinterpret_cast<const char*>(data), size);
     datas.RewindRead(0);
     MessageParcel reply;
     MessageOption option;
@@ -103,22 +96,6 @@ bool ExternalFileAccessRenameFuzzTest(std::unique_ptr<char[]> data, size_t size)
 /* Fuzzer entry point */
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
-    /* Run your code on data */
-    if (data == nullptr) {
-        return 0;
-    }
-
-    /* Validate the length of size */
-    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
-        return 0;
-    }
-
-    auto str = std::make_unique<char[]>(size + 1);
-    (void)memset_s(str.get(), size + 1, 0x00, size + 1);
-    if (memcpy_s(str.get(), size, data, size) != EOK) {
-        return 0;
-    }
-
-    OHOS::ExternalFileAccessRenameFuzzTest(move(str), size);
+    OHOS::ExternalFileAccessRenameFuzzTest(data, size);
     return 0;
 }
diff --git a/test/fuzztest/externalfileaccessscanfile_fuzzer/externalfileaccessscanfile_fuzzer.cpp b/test/fuzztest/externalfileaccessscanfile_fuzzer/externalfileaccessscanfile_fuzzer.cpp
index d5724785..b9954568 100644
--- a/test/fuzztest/externalfileaccessscanfile_fuzzer/externalfileaccessscanfile_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccessscanfile_fuzzer/externalfileaccessscanfile_fuzzer.cpp
@@ -37,13 +37,6 @@ using namespace std;
 using namespace OHOS;
 using namespace FileAccessFwk;
 using namespace AbilityRuntime;
-constexpr size_t FOO_MAX_LEN = 1024;
-constexpr size_t U32_AT_SIZE = 4;
-
-
-enum {
-    TOKEN_INDEX_ONE = 0,
-};
 
 void SetNativeToken()
 {
@@ -71,14 +64,14 @@ void SetNativeToken()
     OHOS::Security::AccessToken::AccessTokenKit::ReloadNativeTokenInfo();
 }
 
-bool ExternalFileAccessScanFileFuzzTest(std::unique_ptr<char[]> data, size_t size)
+bool ExternalFileAccessScanFileFuzzTest(const uint8_t *data, size_t size)
 {
     SetNativeToken();
     // CMD_SCANFILE
     uint32_t code = 9;
     MessageParcel datas;
     datas.WriteInterfaceToken(FileAccessExtStub::GetDescriptor());
-    datas.WriteBuffer(data.get(), size);
+    datas.WriteBuffer(reinterpret_cast<const char*>(data), size);
     datas.RewindRead(0);
     MessageParcel reply;
     MessageOption option;
@@ -103,22 +96,6 @@ bool ExternalFileAccessScanFileFuzzTest(std::unique_ptr<char[]> data, size_t siz
 /* Fuzzer entry point */
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
 {
-    /* Run your code on data */
-    if (data == nullptr) {
-        return 0;
-    }
-
-    /* Validate the length of size */
-    if (size < OHOS::U32_AT_SIZE || size > OHOS::FOO_MAX_LEN) {
-        return 0;
-    }
-
-    auto str = std::make_unique<char[]>(size + 1);
-    (void)memset_s(str.get(), size + 1, 0x00, size + 1);
-    if (memcpy_s(str.get(), size, data, size) != EOK) {
-        return 0;
-    }
-
-    OHOS::ExternalFileAccessScanFileFuzzTest(move(str), size);
+    OHOS::ExternalFileAccessScanFileFuzzTest(data, size);
     return 0;
 }
diff --git a/test/unittest/external_notify_test.cpp b/test/unittest/external_notify_test.cpp
index b8893980..1579d2d0 100644
--- a/test/unittest/external_notify_test.cpp
+++ b/test/unittest/external_notify_test.cpp
@@ -1125,8 +1125,6 @@ HWTEST_F(FileExtensionNotifyTest, external_file_access_notify_0017, testing::ext
         Uri fileUri("");
         result = g_fah->CreateFile(newFileDir1, "uri_file", fileUri);
         EXPECT_EQ(result, OHOS::FileAccessFwk::ERR_OK);
-        usleep(SLEEP_TIME / 10);
-        EXPECT_NE(g_notifyEvent, ADD_EVENT);
         usleep(SLEEP_TIME);
         EXPECT_EQ(g_notifyEvent, ADD_EVENT);