diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 4e3951ab6be80c0bbe463ed7a981ee83c5fe3d22..5a2e35045018a4780be8dff09c13454a039d4ab7 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -430,7 +430,7 @@ int32_t readFromFile(char *name, uint32_t *len, void **buf) {
 
 
 int32_t handleUserDefinedFunc(SSqlObj* pSql, struct SSqlInfo* pInfo) {
-  const char *msg1 = "function name is too long";
+  const char *msg1 = "invalidate function name";
   const char *msg2 = "path is too long";
   const char *msg3 = "invalid outputtype";
   const char *msg4 = "invalid script";
@@ -447,7 +447,10 @@ int32_t handleUserDefinedFunc(SSqlObj* pSql, struct SSqlInfo* pInfo) {
       }
 
       createInfo->name.z[createInfo->name.n] = 0;
-
+      // funcname's naming rule is same to column 
+      if (validateColumnName(createInfo->name.z) != TSDB_CODE_SUCCESS) {
+        return  invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg1);
+      }
       strdequote(createInfo->name.z);
 
       if (strlen(createInfo->name.z) >= TSDB_FUNC_NAME_LEN) {