diff --git a/source/client/test/clientTests.cpp b/source/client/test/clientTests.cpp
index 276c19538c26f406051d08ba5bf3e7e9176c0e4d..7bba0935882bcac5b784dee40a6b4b8f24bc6ae9 100644
--- a/source/client/test/clientTests.cpp
+++ b/source/client/test/clientTests.cpp
@@ -334,7 +334,7 @@ TEST(testCase, create_ctable_Test) {
   }
   taos_free_result(pRes);
 
-  pRes = taos_query(pConn, "create table tm0 using st1 tags(1)");
+  pRes = taos_query(pConn, "create table tu using sts tags('2021-10-10 1:1:1');");
   if (taos_errno(pRes) != 0) {
     printf("failed to create child table tm0, reason:%s\n", taos_errstr(pRes));
   }
diff --git a/source/libs/parser/src/dCDAstProcess.c b/source/libs/parser/src/dCDAstProcess.c
index b4125b0a24e92c1f3b3266fc980c5e92297cca03..6131d50c127be5c1270cc9e5da18d55c9033137a 100644
--- a/source/libs/parser/src/dCDAstProcess.c
+++ b/source/libs/parser/src/dCDAstProcess.c
@@ -260,8 +260,11 @@ static int32_t doParseSerializeTagValue(SSchema* pTagSchema, int32_t numOfInputT
     SKvParam param = {.builder = pKvRowBuilder, .schema = pSchema};
 
     SToken* pItem = taosArrayGet(pTagValList, i);
-    code = parseValueToken(&endPtr, pItem, pSchema, tsPrecision, tmpTokenBuf, KvRowAppend, &param, pMsgBuf);
+    if (pSchema->type == TSDB_DATA_TYPE_TIMESTAMP && pItem->z[0] == '\'') {
+      pItem->z += 1;
+    }
 
+    code = parseValueToken(&endPtr, pItem, pSchema, tsPrecision, tmpTokenBuf, KvRowAppend, &param, pMsgBuf);
     if (code != TSDB_CODE_SUCCESS) {
       return buildInvalidOperationMsg(pMsgBuf, msg1);
     }