diff --git a/modules/arena/modelarena.go b/modules/arena/modelarena.go
index 16b2895a4..1a855f478 100644
--- a/modules/arena/modelarena.go
+++ b/modules/arena/modelarena.go
@@ -112,6 +112,7 @@ func (this *modelArena) updateArenaUserInfo(info *pb.DBArenaUser) (err error) {
 	if dan, err = this.computedan(info.Integral); err != nil {
 		return
 	}
+	info.Dan = dan
 	this.Change(info.Uid, map[string]interface{}{
 		"integral": info.Integral,
 		"dan":      dan,