diff --git a/src/share/system_variable/ob_system_variable_init.cpp b/src/share/system_variable/ob_system_variable_init.cpp
index 3a17192e11..dd6e5475fc 100644
--- a/src/share/system_variable/ob_system_variable_init.cpp
+++ b/src/share/system_variable/ob_system_variable_init.cpp
@@ -1852,7 +1852,7 @@ static struct VarsInit{
       ObSysVars[127].info_ = "set to 1 (the default by MySQL), foreign key constraints are checked. If set to 0, foreign key constraints are ignored" ;
       ObSysVars[127].name_ = "foreign_key_checks" ;
       ObSysVars[127].data_type_ = ObIntType ;
-      ObSysVars[127].flags_ = ObSysVarFlag::GLOBAL_SCOPE | ObSysVarFlag::SESSION_SCOPE | ObSysVarFlag::NEED_SERIALIZE ;
+      ObSysVars[127].flags_ = ObSysVarFlag::GLOBAL_SCOPE | ObSysVarFlag::SESSION_SCOPE | ObSysVarFlag::NEED_SERIALIZE | ObSysVarFlag::MYSQL_ONLY ;
       ObSysVars[127].id_ = SYS_VAR_FOREIGN_KEY_CHECKS ;
       cur_max_var_id = MAX(cur_max_var_id, static_cast<int64_t>(SYS_VAR_FOREIGN_KEY_CHECKS)) ;
       ObSysVarsIdToArrayIdx[SYS_VAR_FOREIGN_KEY_CHECKS] = 127 ;
diff --git a/src/share/system_variable/ob_system_variable_init.json b/src/share/system_variable/ob_system_variable_init.json
index 3371f7cab3..d5951f874a 100644
--- a/src/share/system_variable/ob_system_variable_init.json
+++ b/src/share/system_variable/ob_system_variable_init.json
@@ -1841,7 +1841,7 @@
     "base_value": "1",
     "data_type": "bool",
     "info": "set to 1 (the default by MySQL), foreign key constraints are checked. If set to 0, foreign key constraints are ignored",
-    "flags": "GLOBAL | SESSION | NEED_SERIALIZE",
+    "flags": "GLOBAL | SESSION | NEED_SERIALIZE | MYSQL_ONLY",
     "publish_version": "",
     "info_cn": "",
     "background_cn": "",