diff --git a/pkg/apis/monitor/commalert.go b/pkg/apis/monitor/commalert.go
index 9b143a7cab..344ba6331f 100644
--- a/pkg/apis/monitor/commalert.go
+++ b/pkg/apis/monitor/commalert.go
@@ -86,6 +86,8 @@ type CommonAlertUpdateInput struct {
 	Channel []string `json:"channel"`
 	// 通知接受者
 	Recipients []string `json:"recipients"`
+	// systemalert policy may need update through operator
+	ForceUpdate bool `json:"force_update"`
 }
 
 type CommonAlertDetails struct {
diff --git a/pkg/monitor/models/commonalert.go b/pkg/monitor/models/commonalert.go
index 46813bde77..77040afef6 100644
--- a/pkg/monitor/models/commonalert.go
+++ b/pkg/monitor/models/commonalert.go
@@ -706,9 +706,11 @@ func (alert *SCommonAlert) ValidateUpdateData(
 		if err != nil {
 			return data, errors.Wrap(err, "metric query error")
 		}
-
 		if alert.getAlertType() == monitor.CommonAlertSystemAlertType {
-			return data, nil
+			forceUpdate, _ := data.Bool("force_update")
+			if !forceUpdate {
+				return data, nil
+			}
 		}
 		data.Update(jsonutils.Marshal(metricQuery))
 		err = data.Unmarshal(updataInput)