diff --git a/source/client/src/clientSml.c b/source/client/src/clientSml.c
index ffff3df5d0..8e5c6e7250 100644
--- a/source/client/src/clientSml.c
+++ b/source/client/src/clientSml.c
@@ -218,7 +218,16 @@ int32_t smlSetCTableName(SSmlTableInfo *oneTable) {
 
   if (strlen(oneTable->childTableName) == 0) {
     SArray       *dst = taosArrayDup(oneTable->tags, NULL);
-    RandTableName rName = {dst, oneTable->sTableName, (uint8_t)oneTable->sTableNameLen, oneTable->childTableName};
+    ASSERT(oneTable->sTableNameLen < TSDB_TABLE_NAME_LEN);
+    char superName[TSDB_TABLE_NAME_LEN] = {0};
+    RandTableName rName = {dst, NULL, (uint8_t)oneTable->sTableNameLen, oneTable->childTableName};
+    if(tsSmlDot2Underline){
+      memcpy(superName, oneTable->sTableName, oneTable->sTableNameLen);
+      smlStrReplace(superName, oneTable->sTableNameLen);
+      rName.stbFullName = superName;
+    }else{
+      rName.stbFullName = oneTable->sTableName;
+    }
 
     buildChildTableName(&rName);
     taosArrayDestroy(dst);
@@ -230,6 +239,9 @@ void getTableUid(SSmlHandle *info, SSmlLineInfo *currElement, SSmlTableInfo *tin
   char   key[TSDB_TABLE_NAME_LEN * 2 + 1] = {0};
   size_t nLen = strlen(tinfo->childTableName);
   memcpy(key, currElement->measure, currElement->measureLen);
+  if(tsSmlDot2Underline){
+    smlStrReplace(key, currElement->measureLen);
+  }
   memcpy(key + currElement->measureLen + 1, tinfo->childTableName, nLen);
   void *uid =
       taosHashGet(info->tableUids, key,
diff --git a/utils/test/c/sml_test.c b/utils/test/c/sml_test.c
index e4ed6037a3..5be9d98a7f 100644
--- a/utils/test/c/sml_test.c
+++ b/utils/test/c/sml_test.c
@@ -1533,6 +1533,7 @@ int sml_ts3724_Test() {
 
   const char *sql[] = {
       "stb.2,t1=1 f1=283i32 1632299372000",
+      "stb_2,t1=1 f1=283i32 1632299372000",
       ".stb2,t1=1 f1=106i32 1632299378000",
       "stb2.,t1=1 f1=106i32 1632299378000",
   };
@@ -1547,6 +1548,18 @@ int sml_ts3724_Test() {
   printf("%s result0:%s\n", __FUNCTION__, taos_errstr(pRes));
   taos_free_result(pRes);
 
+  pRes = taos_query(taos, "select * from stb_2");
+  TAOS_ROW row = taos_fetch_row(pRes);
+  int numRows = taos_affected_rows(pRes);
+  ASSERT(numRows == 1);
+  taos_free_result(pRes);
+
+  pRes = taos_query(taos, "show stables");
+  row = taos_fetch_row(pRes);
+  numRows = taos_affected_rows(pRes);
+  ASSERT(numRows == 3);
+  taos_free_result(pRes);
+
   taos_close(taos);
 
   return code;