diff --git a/server/hallserver/room/roommgr.go b/server/hallserver/room/roommgr.go
index 434cdc66..b45fe2a0 100644
--- a/server/hallserver/room/roommgr.go
+++ b/server/hallserver/room/roommgr.go
@@ -298,6 +298,7 @@ func (this *roomMgr) CMSwitchTeam(hdr *f5.MsgHdr, msg *cs.CMSwitchTeam) {
 		}
 		roomPtr.removeObTeam(t)
 		roomPtr.addTeam(t)
+		roomPtr.autoStartCountdown()
 	} else {
 		t := roomPtr.getTeamById(msg.GetTeamId())
 		if t == nil {