diff --git a/src/rootserver/ob_ddl_service.cpp b/src/rootserver/ob_ddl_service.cpp
index f9806af4b5..766469b6d6 100755
--- a/src/rootserver/ob_ddl_service.cpp
+++ b/src/rootserver/ob_ddl_service.cpp
@@ -8389,7 +8389,6 @@ int ObDDLService::get_index_schema_by_name(
   ObArenaAllocator allocator(ObModIds::OB_SCHEMA);
   const ObString &index_name = drop_index_arg.index_name_;
   const bool is_mlog = (obrpc::ObIndexArg::DROP_MLOG == drop_index_arg.index_action_type_);
-  index_table_schema = nullptr;
 
   //build index name and get index schema
   if (is_mlog) {
@@ -8413,12 +8412,6 @@ int ObDDLService::get_index_schema_by_name(
       LOG_USER_ERROR(OB_ERR_CANT_DROP_FIELD_OR_KEY, index_name.length(), index_name.ptr());
       LOG_WARN("get index table schema failed", K(tenant_id),
           K(database_id), K(index_table_name), K(ret));
-    } else if (is_index && data_table_id != index_table_schema->get_data_table_id()) {
-      ret = OB_ERR_CANT_DROP_FIELD_OR_KEY;
-      LOG_USER_ERROR(OB_ERR_CANT_DROP_FIELD_OR_KEY, index_name.length(), index_name.ptr());
-      LOG_WARN("get index table schema failed", K(tenant_id),
-          K(database_id), K(index_table_name), K(index_table_schema->get_table_id()), K(ret));
-      index_table_schema = nullptr;
     } else if (index_table_schema->is_in_recyclebin()) {
       ret = OB_ERR_OPERATION_ON_RECYCLE_OBJECT;
       LOG_WARN("index table is in recyclebin", K(ret));
diff --git a/src/storage/ddl/ob_ddl_lock.cpp b/src/storage/ddl/ob_ddl_lock.cpp
index 01b1d0cd3d..31f3e4ef84 100644
--- a/src/storage/ddl/ob_ddl_lock.cpp
+++ b/src/storage/ddl/ob_ddl_lock.cpp
@@ -92,9 +92,9 @@ int ObDDLLock::lock_for_add_drop_index(
   const int64_t timeout_us = DEFAULT_TIMEOUT;
   ObSEArray<ObTabletID, 1> data_tablet_ids;
   ObInnerSQLConnection *iconn = nullptr;
-  if (OB_UNLIKELY(data_table_schema.is_user_hidden_table() || data_table_id != index_schema.get_data_table_id())) {
+  if (data_table_schema.is_user_hidden_table()) {
     ret = OB_ERR_UNEXPECTED;
-    LOG_WARN("lock for rebuild hidden table index", K(ret), K(tenant_id), K(data_table_id), K(index_table_id), K(index_schema.get_data_table_id()));
+    LOG_WARN("lock for rebuild hidden table index", K(ret));
   } else if (!need_lock(data_table_schema)) {
     LOG_INFO("skip ddl lock", K(data_table_id));
   } else {