diff --git a/server/gameserver/matchteam.cc b/server/gameserver/matchteam.cc
index 7ff5bfb..5fef5fa 100644
--- a/server/gameserver/matchteam.cc
+++ b/server/gameserver/matchteam.cc
@@ -255,7 +255,7 @@ void MatchTeam::UpdateMaster()
                     TryCombineTeam();
                 }
             }
-            if (phase_left_time_ <= 0) {
+            if (phase_left_time_ <= 0 || GetPredictMemberNum() >= MAX_TEAM_NUM) {
                 ChooseLeader();
                 phase_ = kMatchChoose;
                 phase_start_tick_ = a8::XGetTickCount();
@@ -276,8 +276,8 @@ void MatchTeam::UpdateMaster()
                     }
                 }
             }
-            if (phase_left_time_ <= MetaMgr::Instance()->match_lock_time) {
-                for (int i = 0; i < 4; ++i) {
+            if ((phase_left_time_ <= MetaMgr::Instance()->match_lock_time) || IsAllPrepare()) {
+                for (int i = 0; i < MAX_TEAM_NUM; ++i) {
                     AutoChoose(true);
                 }
                 for (auto& member : curr_member_hash_) {
@@ -539,3 +539,14 @@ void MatchTeam::AutoChoose(bool force)
         }
     }
 }
+
+bool MatchTeam::IsAllPrepare()
+{
+    int num = 0;
+    for (auto& member : curr_member_hash_) {
+        if (member->state == kMatchPrepare) {
+            ++num;
+        }
+    }
+    return num >= MAX_TEAM_NUM;
+}
diff --git a/server/gameserver/matchteam.h b/server/gameserver/matchteam.h
index bf6e76e..b3ee7ff 100644
--- a/server/gameserver/matchteam.h
+++ b/server/gameserver/matchteam.h
@@ -84,6 +84,7 @@ class MatchTeam
     void StartGame();
     void ChooseLeader();
     void AutoChoose(bool force = false);
+    bool IsAllPrepare();
 
  private:
     long long phase_start_tick_ = 0;