diff --git a/dbproxy/svc/l_announcerlog.go b/dbproxy/svc/l_announcerlog.go
index 3c3af55..c43f03a 100644
--- a/dbproxy/svc/l_announcerlog.go
+++ b/dbproxy/svc/l_announcerlog.go
@@ -52,7 +52,11 @@ func InsertAnnouncerLog(logs ...*model.AnnouncerLog) (err error) {
 // 取最新100条数据
 func FetchAnnouncerLog(plt string) (recs []model.AnnouncerLog, err error) {
 	query := bson.M{}
-	err = AnnouncerLogCollection(plt).Find(query).Sort("-_id").Limit(100).All(&recs)
+	c := AnnouncerLogCollection(plt)
+	if c == nil {
+		return recs, AnnouncerLogDBErr
+	}
+	err = c.Find(query).Sort("-_id").Limit(100).All(&recs)
 	return
 }