diff --git a/domain/model/group_m/mic.go b/domain/model/group_m/mic.go
index 1000c7259fb77f2e434e944a2e32adfd48c2371d..f40b9469bdfbd179df166c941688c974d00bbbdf 100644
--- a/domain/model/group_m/mic.go
+++ b/domain/model/group_m/mic.go
@@ -912,7 +912,7 @@ func GetMicHasInGroupNum(model *domain.Model) (map[string]int64, error) {
 		}
 	}
 	// cache 1min
-	_ = micGroupNumCache.SetWithExpire(micGroupNumKey, resultGroupUuids, time.Minute)
+	_ = micGroupNumCache.SetWithExpire(micGroupNumKey, resultGroupUuids, time.Minute*15)
 	model.Log.Infof("GetMicHasInGroupNum cache miss:%v", resultGroupUuids)
 	return resultGroupUuids, nil
 }