diff --git a/coolq/bot.go b/coolq/bot.go
index a853a24..94ef00c 100644
--- a/coolq/bot.go
+++ b/coolq/bot.go
@@ -408,9 +408,20 @@ func (bot *CQBot) formatGroupMessage(m *message.GroupMessage) MSG {
 		gm["sender"].(MSG)["nickname"] = "匿名消息"
 		gm["sub_type"] = "anonymous"
 	} else {
-		mem := bot.Client.FindGroup(m.GroupCode).FindMember(m.Sender.Uin)
+		group := bot.Client.FindGroup(m.GroupCode)
+		mem := group.FindMember(m.Sender.Uin)
 		if mem == nil{
-			return Failed(100,"MEMBER_NOT_FOUND","群员不存在")
+			log.Warnf("获取 %v 成员信息失败，尝试刷新成员列表", m.Sender.Uin)
+			t, err := bot.Client.GetGroupMembers(group)
+			if err != nil {
+				log.Warnf("刷新群 %v 成员列表失败: %v", group.Uin, err)
+				return Failed(100, "GET_MEMBERS_API_ERROR", err.Error())
+			}
+			group.Members = t
+			mem = group.FindMember(m.Sender.Uin)
+			if  mem != nil{
+				return Failed(100,"MEMBER_NOT_FOUND","群员不存在")
+			}
 		}
 		ms := gm["sender"].(MSG)
 		ms["role"] = func() string {