diff --git a/test/fuzztest/externalfileaccess_fuzzer/external_file_access_fuzzer.cpp b/test/fuzztest/externalfileaccess_fuzzer/external_file_access_fuzzer.cpp
index 9c185dff9c952e7506b85122bc59f883eda4a656..fcc1bfc17a97516b210e4ada89381e07033a5ca7 100644
--- a/test/fuzztest/externalfileaccess_fuzzer/external_file_access_fuzzer.cpp
+++ b/test/fuzztest/externalfileaccess_fuzzer/external_file_access_fuzzer.cpp
@@ -137,10 +137,7 @@ bool CreatorFuzzTest(const uint8_t* data, size_t size)
 
 bool CheckDataAndHelper(const uint8_t* data, size_t size, shared_ptr<FileAccessHelper>& helper)
 {
-    if ((data == nullptr) || (size <= 0)) {
-        HILOG_ERROR("parameter data is nullptr or parameter size <= 0.");
-        return false;
-    }
+    (void)data;
     helper = GetFileAccessHelper();
     if (helper == nullptr) {
         HILOG_ERROR("GetFileAccessHelper return nullptr.");
diff --git a/test/fuzztest/fileaccessextstub_fuzzer/fileaccessextstub_fuzzer.cpp b/test/fuzztest/fileaccessextstub_fuzzer/fileaccessextstub_fuzzer.cpp
index 37a38aa5ddaca1555d4660bd942b665dd20b85e0..8d9ad7c9a075d5243eadf3a6cf3b1f25a1ed87f4 100644
--- a/test/fuzztest/fileaccessextstub_fuzzer/fileaccessextstub_fuzzer.cpp
+++ b/test/fuzztest/fileaccessextstub_fuzzer/fileaccessextstub_fuzzer.cpp
@@ -264,6 +264,7 @@ bool CmdGetRootsFuzzTest(shared_ptr<FileAccessExtStub> fileAccessExtStub, const
     MessageParcel msg;
     MessageParcel reply;
 
+    msg.WriteBuffer(data, size);
     fileAccessExtStub->CmdGetRoots(msg, reply);
     return true;
 }
diff --git a/test/fuzztest/fileaccessextstubbranch_fuzzer/fileaccessextstubbranch_fuzzer.cpp b/test/fuzztest/fileaccessextstubbranch_fuzzer/fileaccessextstubbranch_fuzzer.cpp
index f621118d4aad663b3b1535cc166092c01496c761..2f93d0037bf194020f0dd0f4250c2d30f033cbd6 100644
--- a/test/fuzztest/fileaccessextstubbranch_fuzzer/fileaccessextstubbranch_fuzzer.cpp
+++ b/test/fuzztest/fileaccessextstubbranch_fuzzer/fileaccessextstubbranch_fuzzer.cpp
@@ -557,6 +557,7 @@ bool CmdGetRootsFuzzTest(shared_ptr<FileAccessExtStub> fileAccessExtStub, const
 {
     MessageParcel msg;
     MessageParcel reply;
+    msg.WriteBuffer(data, size);
 
     que = {};
     que.push(false);
diff --git a/test/fuzztest/useraccesscommonutils_fuzzer/useraccesscommonutils_fuzzer.cpp b/test/fuzztest/useraccesscommonutils_fuzzer/useraccesscommonutils_fuzzer.cpp
index a0c552cdb17e915bc21acd42ee78fbd2c6c873e8..ec2fde9acb870c573bd37982c7c4d4ce7f84c4ad 100644
--- a/test/fuzztest/useraccesscommonutils_fuzzer/useraccesscommonutils_fuzzer.cpp
+++ b/test/fuzztest/useraccesscommonutils_fuzzer/useraccesscommonutils_fuzzer.cpp
@@ -25,6 +25,7 @@ using namespace FileAccessFwk;
 
 bool IsFullMountFuzzTest(const uint8_t *data, size_t size)
 {
+    (void)data;
     IsFullMountEnable();
     return true;
 }