diff --git a/interfaces/kits/js/src/mod_fs/class_file/file_n_exporter.cpp b/interfaces/kits/js/src/mod_fs/class_file/file_n_exporter.cpp
index f323319c16da6ad8ed770b2c438e05914d25b935..5899c9c325b7b31d835e76c9ba9a88ea9f5a4308 100644
--- a/interfaces/kits/js/src/mod_fs/class_file/file_n_exporter.cpp
+++ b/interfaces/kits/js/src/mod_fs/class_file/file_n_exporter.cpp
@@ -66,6 +66,13 @@ napi_value FileNExporter::GetFD(napi_env env, napi_callback_info info)
         HILOGE("Failed to get file entity");
         return nullptr;
     }
+
+    if (!rafEntity->fd_.get()) {
+        HILOGE("File descriptor pointer is null");
+        NError(EIO).ThrowErr(env);
+        return nullptr;
+    }
+
     return NVal::CreateInt32(env, rafEntity->fd_.get()->GetFD()).val_;
 }
 
@@ -264,6 +271,12 @@ napi_value FileNExporter::TryLock(napi_env env, napi_callback_info info)
         return nullptr;
     }
 
+    if (!fileEntity->fd_.get()) {
+        HILOGE("File descriptor pointer is null");
+        NError(EIO).ThrowErr(env);
+        return nullptr;
+    }
+
     bool exclusive = false;
     if (!GetExclusive(env, funcArg, exclusive)) {
         return nullptr;
@@ -296,6 +309,12 @@ napi_value FileNExporter::UnLock(napi_env env, napi_callback_info info)
         return nullptr;
     }
 
+    if (!fileEntity->fd_.get()) {
+        HILOGE("File descriptor pointer is null");
+        NError(EIO).ThrowErr(env);
+        return nullptr;
+    }
+
     int ret = 0;
     ret = flock(fileEntity->fd_.get()->GetFD(), LOCK_UN);
     if (ret < 0) {
diff --git a/interfaces/kits/js/src/mod_fs/class_file/fs_file.cpp b/interfaces/kits/js/src/mod_fs/class_file/fs_file.cpp
index 8ebe6d597cf8d2cfec702ffc45f34666be622468..90288b1d5e251d87e0b87bd9cf75bdc1854b48a7 100644
--- a/interfaces/kits/js/src/mod_fs/class_file/fs_file.cpp
+++ b/interfaces/kits/js/src/mod_fs/class_file/fs_file.cpp
@@ -51,6 +51,12 @@ FsResult<int32_t> FsFile::GetFD() const
         HILOGE("Failed to get file entity");
         return FsResult<int32_t>::Error(EINVAL);
     }
+
+    if (!fileEntity->fd_.get()) {
+        HILOGE("File descriptor pointer is null");
+        return FsResult<int32_t>::Error(EIO);
+    }
+
     return FsResult<int32_t>::Success(fileEntity->fd_.get()->GetFD());
 }
 
@@ -130,10 +136,11 @@ FsResult<void> FsFile::Lock(bool exclusive) const
         return FsResult<void>::Error(EINVAL);
     }
 
-    if (!fileEntity || !fileEntity->fd_.get()) {
-        HILOGE("File has been closed in Lock cbExec possibly");
+    if (!fileEntity->fd_.get()) {
+        HILOGE("File descriptor pointer is null");
         return FsResult<void>::Error(EIO);
     }
+
     int ret = 0;
     auto mode = exclusive ? LOCK_EX : LOCK_SH;
     ret = flock(fileEntity->fd_.get()->GetFD(), mode);
@@ -152,6 +159,11 @@ FsResult<void> FsFile::TryLock(bool exclusive) const
         return FsResult<void>::Error(EINVAL);
     }
 
+    if (!fileEntity->fd_.get()) {
+        HILOGE("File descriptor pointer is null");
+        return FsResult<void>::Error(EIO);
+    }
+
     int ret = 0;
     auto mode = static_cast<uint32_t>(exclusive ? LOCK_EX : LOCK_SH);
     ret = flock(fileEntity->fd_.get()->GetFD(), mode | LOCK_NB);
@@ -170,6 +182,11 @@ FsResult<void> FsFile::UnLock() const
         return FsResult<void>::Error(EINVAL);
     }
 
+    if (!fileEntity->fd_.get()) {
+        HILOGE("File descriptor pointer is null");
+        return FsResult<void>::Error(EIO);
+    }
+
     int ret = 0;
     ret = flock(fileEntity->fd_.get()->GetFD(), LOCK_UN);
     if (ret < 0) {