diff --git a/server/gameserver/custom_battle.cc b/server/gameserver/custom_battle.cc
index 1f44fb06..76bae224 100644
--- a/server/gameserver/custom_battle.cc
+++ b/server/gameserver/custom_battle.cc
@@ -124,3 +124,12 @@ int CustomBattle::GetMemberNum()
 {
     return member_id_hash_.size();
 }
+
+void CustomBattle::TraverseMemberList(std::function<bool (CustomMember*)> func)
+{
+    for (auto& pair : member_id_hash_) {
+        if (!func(pair.second.get())) {
+            break;
+        }
+    }
+}
diff --git a/server/gameserver/custom_battle.h b/server/gameserver/custom_battle.h
index a078d84a..acdaa48a 100644
--- a/server/gameserver/custom_battle.h
+++ b/server/gameserver/custom_battle.h
@@ -26,6 +26,7 @@ class CustomBattle
     std::shared_ptr<CustomTeam> GetTeamByTeamUuid(const std::string& team_uuid);
     bool AllIsJoined();
     int GetMemberNum();
+    void TraverseMemberList(std::function<bool (CustomMember*)> func);
 
  private:
     bool parse_ok_ = false;