diff --git a/source/os/CMakeLists.txt b/source/os/CMakeLists.txt
index 5d9b6ee5cc..3aac5e9775 100644
--- a/source/os/CMakeLists.txt
+++ b/source/os/CMakeLists.txt
@@ -59,4 +59,8 @@ endif()
 
 IF (JEMALLOC_ENABLED)
     target_link_libraries(os PUBLIC -ljemalloc)
-ENDIF ()
\ No newline at end of file
+ENDIF ()
+
+if(${BUILD_TEST})
+    add_subdirectory(test)
+endif(${BUILD_TEST})
\ No newline at end of file
diff --git a/source/os/src/osFile.c b/source/os/src/osFile.c
index fce276bc35..3f527e9130 100644
--- a/source/os/src/osFile.c
+++ b/source/os/src/osFile.c
@@ -526,6 +526,21 @@ int32_t taosFStatFile(TdFilePtr pFile, int64_t *size, int32_t *mtime) {
 
 int32_t taosLockFile(TdFilePtr pFile) {
 #ifdef WINDOWS
+  BOOL          fSuccess = FALSE;
+  LARGE_INTEGER fileSize;
+  OVERLAPPED    overlapped = {0};
+
+  HANDLE hFile = (HANDLE)_get_osfhandle(pFile->fd);
+
+  fSuccess = LockFileEx(hFile, LOCKFILE_EXCLUSIVE_LOCK | LOCKFILE_FAIL_IMMEDIATELY,
+                        0,           // reserved
+                        ~0,          // number of bytes to lock low
+                        ~0,          // number of bytes to lock high
+                        &overlapped  // overlapped structure
+  );
+  if (!fSuccess) {
+    return GetLastError();
+  }
   return 0;
 #else
   assert(pFile->fd >= 0);  // Please check if you have closed the file.
@@ -536,6 +551,14 @@ int32_t taosLockFile(TdFilePtr pFile) {
 
 int32_t taosUnLockFile(TdFilePtr pFile) {
 #ifdef WINDOWS
+  BOOL          fSuccess = FALSE;
+  OVERLAPPED    overlapped = {0};
+  HANDLE        hFile = (HANDLE)_get_osfhandle(pFile->fd);
+
+  fSuccess = UnlockFileEx(hFile, 0, ~0, ~0, &overlapped);
+  if (!fSuccess) {
+    return GetLastError();
+  }
   return 0;
 #else
   assert(pFile->fd >= 0);  // Please check if you have closed the file.
diff --git a/source/os/test/osTests.cpp b/source/os/test/osTests.cpp
index d79e1934de..f831f457f9 100644
--- a/source/os/test/osTests.cpp
+++ b/source/os/test/osTests.cpp
@@ -27,6 +27,7 @@
 #pragma GCC diagnostic ignored "-Wpointer-arith"
 
 #include "os.h"
+#include "tlog.h"
 
 TEST(osTest, osSystem) {
   const char *flags = "UTL FATAL ";
@@ -35,4 +36,97 @@ TEST(osTest, osSystem) {
   taosPrintTrace(flags, level, dflag);
 }
 
+void fileOperateOnFree(void *param) {
+  char *    fname = (char *)param;
+  TdFilePtr pFile = taosOpenFile(fname, TD_FILE_CREATE | TD_FILE_WRITE);
+  printf("On free thread open file\n");
+  ASSERT_NE(pFile, nullptr);
+
+  int ret = taosLockFile(pFile);
+  printf("On free thread lock file ret:%d\n", ret);
+  ASSERT_EQ(ret, 0);
+
+  ret = taosUnLockFile(pFile);
+  printf("On free thread unlock file ret:%d\n", ret);
+  ASSERT_EQ(ret, 0);
+
+  ret = taosCloseFile(&pFile);
+  ASSERT_EQ(ret, 0);
+  printf("On free thread close file ret:%d\n", ret);
+}
+void *fileOperateOnFreeThread(void *param) {
+  fileOperateOnFree(param);
+  return NULL;
+}
+void fileOperateOnBusy(void *param) {
+  char *    fname = (char *)param;
+  TdFilePtr pFile = taosOpenFile(fname, TD_FILE_CREATE | TD_FILE_WRITE);
+  printf("On busy thread open file\n");
+  ASSERT_NE(pFile, nullptr);
+
+  int ret = taosLockFile(pFile);
+  printf("On busy thread lock file ret:%d\n", ret);
+  ASSERT_NE(ret, 0);
+
+  ret = taosUnLockFile(pFile);
+  printf("On busy thread unlock file ret:%d\n", ret);
+#ifdef _TD_DARWIN_64
+  ASSERT_EQ(ret, 0);
+#else
+  ASSERT_NE(ret, 0);
+#endif
+
+  ret = taosCloseFile(&pFile);
+  printf("On busy thread close file ret:%d\n", ret);
+  ASSERT_EQ(ret, 0);
+}
+void *fileOperateOnBusyThread(void *param) {
+  fileOperateOnBusy(param);
+  return NULL;
+}
+
+TEST(osTest, osFile) {
+  char *fname = "./osfiletest1.txt";
+
+  TdFilePtr pOutFD = taosCreateFile(fname, TD_FILE_WRITE | TD_FILE_CREATE | TD_FILE_TRUNC);
+  ASSERT_NE(pOutFD, nullptr);
+  printf("create file success\n");
+
+  TdFilePtr pFile = taosOpenFile(fname, TD_FILE_CREATE | TD_FILE_WRITE);
+  printf("open file\n");
+  ASSERT_NE(pFile, nullptr);
+
+  int ret = taosLockFile(pFile);
+  printf("lock file ret:%d\n", ret);
+  ASSERT_EQ(ret, 0);
+
+  TdThreadAttr thattr;
+  taosThreadAttrInit(&thattr);
+
+  TdThread thread1, thread2;
+  taosThreadCreate(&(thread1), &thattr, fileOperateOnBusyThread, (void *)fname);
+  taosThreadAttrDestroy(&thattr);
+
+  taosThreadJoin(thread1, NULL);
+  taosThreadClear(&thread1);
+
+  ret = taosUnLockFile(pFile);
+  printf("unlock file ret:%d\n", ret);
+  ASSERT_EQ(ret, 0);
+
+  ret = taosCloseFile(&pFile);
+  printf("close file ret:%d\n", ret);
+  ASSERT_EQ(ret, 0);
+
+  taosThreadCreate(&(thread2), &thattr, fileOperateOnFreeThread, (void *)fname);
+  taosThreadAttrDestroy(&thattr);
+
+  taosThreadJoin(thread2, NULL);
+  taosThreadClear(&thread2);
+
+  //int ret = taosRemoveFile(fname);
+  //ASSERT_EQ(ret, 0);
+  //printf("remove file success");
+}
+
 #pragma GCC diagnostic pop