diff --git a/Unity/Assets/Scripts/TH1_Logic/Player/PlayerLogic.cs b/Unity/Assets/Scripts/TH1_Logic/Player/PlayerLogic.cs
index 59b3f3ac3..d2ff58fe6 100644
--- a/Unity/Assets/Scripts/TH1_Logic/Player/PlayerLogic.cs
+++ b/Unity/Assets/Scripts/TH1_Logic/Player/PlayerLogic.cs
@@ -234,6 +234,8 @@ namespace Logic
             //记录oldplayer和newplayer
             var oldPid = playerData2.Id;
             var newPid = playerData.Id;
+
+            bool lostEmbassy = Main.CityLogic.CheckCradleCapital(mapData, playerData2, cityData);
             
             // 修改城市和玩家的所属关系
             if (!mapData.SetCityIdToPlayerId(cityData.Id, playerData.Id))
@@ -241,7 +243,13 @@ namespace Logic
                 LogSystem.LogError("占领失败!");
                 return;
             }
-                
+
+            // 撤销所有国家在 player2 建立的大使馆
+            if (lostEmbassy)
+            {
+                foreach (var info in playerData2.DiplomacyData.Info) info.IsEmbassy = false;
+            }
+
             //转移小兵的编制，要在处理完城市和玩家所属关系后才能转移小兵编制，不然出局的玩家清理本城市小兵的时候会出错
             if (!mapData.GetCityDataByUnitId(unitData.Id, out var oldCityData))
             {