diff --git a/source/dnode/vnode/src/tsdb/tsdbFile.c b/source/dnode/vnode/src/tsdb/tsdbFile.c
index 36fb2b11100d2ef29c31f99dc2e446d0d0d7f0af..5a00fa20a0d530189a41b048ad1a1b0e515248ef 100644
--- a/source/dnode/vnode/src/tsdb/tsdbFile.c
+++ b/source/dnode/vnode/src/tsdb/tsdbFile.c
@@ -356,7 +356,7 @@ int tsdbCreateDFile(STsdb *pRepo, SDFile *pDFile, bool updateHeader) {
   ASSERT(pDFile->info.size == 0 && pDFile->info.magic == TSDB_FILE_INIT_MAGIC);
 
   pDFile->pFile = taosOpenFile(TSDB_FILE_FULL_NAME(pDFile), TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_TRUNC);
-  if (pDFile->pFile < 0) {
+  if (pDFile->pFile == NULL) {
     if (errno == ENOENT) {
       // Try to create directory recursively
       char *s = strdup(TSDB_FILE_REL_NAME(pDFile));
@@ -367,7 +367,7 @@ int tsdbCreateDFile(STsdb *pRepo, SDFile *pDFile, bool updateHeader) {
       tfree(s);
 
       pDFile->pFile = taosOpenFile(TSDB_FILE_FULL_NAME(pDFile), TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_TRUNC);
-      if (pDFile->pFile < 0) {
+      if (pDFile->pFile == NULL) {
         terrno = TAOS_SYSTEM_ERROR(errno);
         return -1;
       }
diff --git a/source/libs/index/src/index_fst_counting_writer.c b/source/libs/index/src/index_fst_counting_writer.c
index 86aa257b48a4f5d85e29ed87f6d1125099a79ab8..78c7a8d1934ad30c88ca8ab2b7fffd97c266eb88 100644
--- a/source/libs/index/src/index_fst_counting_writer.c
+++ b/source/libs/index/src/index_fst_counting_writer.c
@@ -105,7 +105,7 @@ WriterCtx* writerCtxCreate(WriterType type, const char* path, bool readOnly, int
 #endif
     }
     memcpy(ctx->file.buf, path, strlen(path));
-    if (ctx->file.pFile < 0) {
+    if (ctx->file.pFile == NULL) {
       indexError("failed to open file, error %d", errno);
       goto END;
     }
diff --git a/source/libs/tdb/src/db/tdbEnv.c b/source/libs/tdb/src/db/tdbEnv.c
index 2afce3082849e469f083b6c113e482b603c504ac..a415d6d60e500cae4389aaf79fdc18f60cae4349 100644
--- a/source/libs/tdb/src/db/tdbEnv.c
+++ b/source/libs/tdb/src/db/tdbEnv.c
@@ -140,7 +140,7 @@ static int tdbEnvDestroy(TENV *pEnv) {
 
 int tdbEnvBeginTxn(TENV *pEnv) {
   pEnv->jpFile = taosOpenFile(pEnv->jname, TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_READ);
-  if (pEnv->jpFile < 0) {
+  if (pEnv->jpFile == NULL) {
     return -1;
   }
 
diff --git a/source/libs/tdb/src/db/tdbPgFile.c b/source/libs/tdb/src/db/tdbPgFile.c
index 48f8ed179229604459c94dc1d97c7364b2004c52..12f062ebf767b927172e91a7a86de4e3cae7d32e 100644
--- a/source/libs/tdb/src/db/tdbPgFile.c
+++ b/source/libs/tdb/src/db/tdbPgFile.c
@@ -95,7 +95,7 @@ int pgFileOpen(SPgFile **ppPgFile, const char *fname, TENV *pEnv) {
 
 int pgFileClose(SPgFile *pPgFile) {
   if (pPgFile) {
-    if (pPgFile->pFile >= 0) {
+    if (pPgFile->pFile != NULL) {
       taosCloseFile(&pPgFile->pFile);
     }
 
diff --git a/source/libs/transport/test/rserver.c b/source/libs/transport/test/rserver.c
index 794497500c52dc58d13eaf1715461ef18daaf568..5432a07649e88c4852b3c1081d5a3837adc23598 100644
--- a/source/libs/transport/test/rserver.c
+++ b/source/libs/transport/test/rserver.c
@@ -43,7 +43,7 @@ void processShellMsg() {
     for (int i = 0; i < numOfMsgs; ++i) {
       taosGetQitem(qall, (void **)&pRpcMsg);
 
-      if (pDataFile >= 0) {
+      if (pDataFile != NULL) {
         if (taosWriteFile(pDataFile, pRpcMsg->pCont, pRpcMsg->contLen) < 0) {
           tInfo("failed to write data file, reason:%s", strerror(errno));
         }
diff --git a/source/libs/wal/src/walSeek.c b/source/libs/wal/src/walSeek.c
index 7aae9138c12bffba5a6c786aa9cde9375f23eaf8..6b3abcd0f98ca15209f1fbeacab35ff8d83f14e8 100644
--- a/source/libs/wal/src/walSeek.c
+++ b/source/libs/wal/src/walSeek.c
@@ -58,13 +58,13 @@ int walSetWrite(SWal* pWal) {
   char fnameStr[WAL_FILE_LEN];
   walBuildIdxName(pWal, fileFirstVer, fnameStr);
   pIdxTFile = taosOpenFile(fnameStr, TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_APPEND);
-  if (pIdxTFile < 0) {
+  if (pIdxTFile == NULL) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
   }
   walBuildLogName(pWal, fileFirstVer, fnameStr);
   pLogTFile = taosOpenFile(fnameStr, TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_APPEND);
-  if (pLogTFile < 0) {
+  if (pLogTFile == NULL) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
   }
@@ -104,14 +104,14 @@ int walChangeWrite(SWal* pWal, int64_t ver) {
   int64_t fileFirstVer = pFileInfo->firstVer;
   walBuildIdxName(pWal, fileFirstVer, fnameStr);
   pIdxTFile = taosOpenFile(fnameStr, TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_APPEND);
-  if (pIdxTFile < 0) {
+  if (pIdxTFile == NULL) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     pWal->pWriteIdxTFile = NULL;
     return -1;
   }
   walBuildLogName(pWal, fileFirstVer, fnameStr);
   pLogTFile = taosOpenFile(fnameStr, TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_APPEND);
-  if (pLogTFile < 0) {
+  if (pLogTFile == NULL) {
     taosCloseFile(&pIdxTFile);
     terrno = TAOS_SYSTEM_ERROR(errno);
     pWal->pWriteLogTFile = NULL;
diff --git a/source/libs/wal/src/walWrite.c b/source/libs/wal/src/walWrite.c
index f9bb1682343105f806f471411e131dc88507737b..ba071340034bbae320e9940efbf5032d387614fd 100644
--- a/source/libs/wal/src/walWrite.c
+++ b/source/libs/wal/src/walWrite.c
@@ -89,7 +89,7 @@ int32_t walRollback(SWal *pWal, int64_t ver) {
 
   walBuildLogName(pWal, walGetCurFileFirstVer(pWal), fnameStr);
   TdFilePtr pLogTFile = taosOpenFile(fnameStr, TD_FILE_WRITE | TD_FILE_READ);
-  if (pLogTFile < 0) {
+  if (pLogTFile == NULL) {
     // TODO
     pthread_mutex_unlock(&pWal->mutex);
     return -1;
@@ -221,13 +221,13 @@ int walRoll(SWal *pWal) {
   char    fnameStr[WAL_FILE_LEN];
   walBuildIdxName(pWal, newFileFirstVersion, fnameStr);
   pIdxTFile = taosOpenFile(fnameStr, TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_APPEND);
-  if (pIdxTFile < 0) {
+  if (pIdxTFile == NULL) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
   }
   walBuildLogName(pWal, newFileFirstVersion, fnameStr);
   pLogTFile = taosOpenFile(fnameStr, TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_APPEND);
-  if (pLogTFile < 0) {
+  if (pLogTFile == NULL) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
   }
diff --git a/source/util/src/tlog.c b/source/util/src/tlog.c
index 52593741b4fb55c91fcce2231b6a5bf23160ae49..567885b0f4f31081486631e64bfe35bd6cbe5803 100644
--- a/source/util/src/tlog.c
+++ b/source/util/src/tlog.c
@@ -416,7 +416,7 @@ void taosPrintLog(const char *flags, int32_t dflag, const char *format, ...) {
   buffer[len++] = '\n';
   buffer[len] = 0;
 
-  if ((dflag & DEBUG_FILE) && tsLogObj.logHandle && tsLogObj.logHandle->pFile >= 0) {
+  if ((dflag & DEBUG_FILE) && tsLogObj.logHandle && tsLogObj.logHandle->pFile != NULL) {
     if (tsAsyncLog) {
       taosPushLogBuffer(tsLogObj.logHandle, buffer, len);
     } else {
@@ -483,7 +483,7 @@ void taosPrintLongString(const char *flags, int32_t dflag, const char *format, .
   buffer[len++] = '\n';
   buffer[len] = 0;
 
-  if ((dflag & DEBUG_FILE) && tsLogObj.logHandle && tsLogObj.logHandle->pFile >= 0) {
+  if ((dflag & DEBUG_FILE) && tsLogObj.logHandle && tsLogObj.logHandle->pFile != NULL) {
     if (tsAsyncLog) {
       taosPushLogBuffer(tsLogObj.logHandle, buffer, len);
     } else {