diff --git a/pkg/notify/models/event.go b/pkg/notify/models/event.go
index fa3992d37f..f648ba579c 100644
--- a/pkg/notify/models/event.go
+++ b/pkg/notify/models/event.go
@@ -44,7 +44,7 @@ type SEvent struct {
 	// 资源创建时间
 	CreatedAt time.Time `nullable:"false" created_at:"true" index:"true" get:"user" list:"user" json:"created_at"`
 
-	Message      string
+	Message      string `length:"medium"`
 	Event        string `width:"64" nullable:"true"`
 	ResourceType string `width:"64" nullable:"true"`
 	Action       string `width:"64" nullable:"true"`
diff --git a/pkg/notify/models/notification_group.go b/pkg/notify/models/notification_group.go
index b8c13e656b..c1abd085b5 100644
--- a/pkg/notify/models/notification_group.go
+++ b/pkg/notify/models/notification_group.go
@@ -55,7 +55,7 @@ type SNotificationGroup struct {
 	GroupKey string `width:"128" nullable:"false" create:"required" list:"user" get:"user"`
 	Title    string
 	// swagger:ignore
-	Message     string
+	Message     string `length:"medium"`
 	ReceiverId  string `width:"128" nullable:"false" create:"required" list:"user" get:"user"`
 	Body        jsonutils.JSONObject
 	Header      jsonutils.JSONObject