diff --git a/Server/SQL/User.cs b/Server/SQL/User.cs
index f0c5651..756b50b 100644
--- a/Server/SQL/User.cs
+++ b/Server/SQL/User.cs
@@ -13,6 +13,28 @@ namespace Server.SQL
         [JsonIgnore]
         public string mail { get; set; }
         public string nickname { get; set; }
+        public long gold { get; set; }
+        public long free_cash { get; set; }
+        public long pay_cash { get; set; }
+
+        public bool buyCash(long buy)
+        {
+            long freeCash = free_cash;
+            long payCash = pay_cash;
+            freeCash -= buy;
+            if(freeCash < 0)
+            {
+                payCash -= freeCash;
+            }
+
+            if(payCash >= 0)
+            {
+                free_cash = freeCash;
+                pay_cash = payCash;
+                return true;
+            }
+            return false;
+        }
     }
 
     public class UserSQL : SQL<User>
diff --git a/Server/Service/Login.cs b/Server/Service/Login.cs
index 2a9cb6b..04c7286 100644
--- a/Server/Service/Login.cs
+++ b/Server/Service/Login.cs
@@ -133,6 +133,8 @@ namespace Server.Service
             LoginResp resp = new LoginResp();
             resp.nickname = user.nickname;
             resp.uuid = user.uuid;
+            resp.gold = (ulong)user.gold;
+            resp.cash = (ulong)(user.free_cash + user.pay_cash);
             resp.dynamic_data = dynamic_data;
             resp.deck_unit = deck_unit;
             resp.deck_info = deck_info;
@@ -160,7 +162,8 @@ namespace Server.Service
     {
         public string uuid;
         public string nickname;
-        public long id;
+        public ulong gold;
+        public ulong cash;
         public List<DynamicData> dynamic_data;
         public List<DeckUnitInfo> deck_unit;
         public List<DeckInfo> deck_info;