diff --git a/backend/app/routers/websocket.py b/backend/app/routers/websocket.py
index 53f81ad..0cb15d8 100644
--- a/backend/app/routers/websocket.py
+++ b/backend/app/routers/websocket.py
@@ -215,12 +215,12 @@ async def broadcast_pool_updates(streamer_id: int):
                 # 获取最新奖池数据
                 pool_data = get_pool_cache(chest.id)
 
-                # 计算赔率
+                # 计算赔率 - 修改为只对获胜方抽水
                 total = pool_data["pool_a"] + pool_data["pool_b"]
                 if total > 0:
-                    distributable = total * 0.9
-                    odds_a = round(distributable / pool_data["pool_a"], 2) if pool_data["pool_a"] > 0 else 0
-                    odds_b = round(distributable / pool_data["pool_b"], 2) if pool_data["pool_b"] > 0 else 0
+                    # 赔率计算改为：(自己奖池 + 对方奖池 * 0.9) / 自己奖池
+                    odds_a = round((pool_data["pool_a"] + pool_data["pool_b"] * 0.9) / pool_data["pool_a"], 2) if pool_data["pool_a"] > 0 else 0
+                    odds_b = round((pool_data["pool_b"] + pool_data["pool_a"] * 0.9) / pool_data["pool_b"], 2) if pool_data["pool_b"] > 0 else 0
                 else:
                     odds_a = odds_b = 0
 
diff --git a/backend/app/schemas/game.py b/backend/app/schemas/game.py
index c481f87..89a4c5a 100644
--- a/backend/app/schemas/game.py
+++ b/backend/app/schemas/game.py
@@ -37,16 +37,16 @@ class ChestResponse(ChestBase):
         """计算A边赔率 (1 : X)"""
         if self.pool_a == 0:
             return 0.0
-        distributable = self.total_pool * 0.9
-        return round(distributable / self.pool_a, 2)
+        # 修改赔率计算方式，只对获胜方抽水
+        return round((self.pool_a + self.pool_b * 0.9) / self.pool_a, 2)
 
     @property
     def odds_b(self) -> float:
         """计算B边赔率 (1 : X)"""
         if self.pool_b == 0:
             return 0.0
-        distributable = self.total_pool * 0.9
-        return round(distributable / self.pool_b, 2)
+        # 修改赔率计算方式，只对获胜方抽水
+        return round((self.pool_b + self.pool_a * 0.9) / self.pool_b, 2)
 
     class Config:
         from_attributes = True
diff --git a/backend/app/services/game_service.py b/backend/app/services/game_service.py
index 68f0d71..a6725da 100644
--- a/backend/app/services/game_service.py
+++ b/backend/app/services/game_service.py
@@ -424,10 +424,12 @@ class GameService:
             print(f"平台抽水转账失败: {str(e)}")
             # 可以在这里添加更详细的错误处理逻辑，比如发送告警通知
 
-        # 计算赔率
+        # 计算赔率 - 修改为只对获胜方抽水
         winner_pool = chest.pool_a if winner == "A" else chest.pool_b
+        loser_pool = chest.pool_b if winner == "A" else chest.pool_a
         if winner_pool > 0:
-            odds = distributable / winner_pool
+            # 赔率计算改为：(获胜方奖池 + 失败方奖池 * 0.9) / 获胜方奖池
+            odds = (winner_pool + loser_pool * 0.9) / winner_pool
 
             # 结算给获胜方
             for bet in bets:
diff --git a/frontend/src/pages/ChestPage.tsx b/frontend/src/pages/ChestPage.tsx
index 37fe0d8..2545168 100644
--- a/frontend/src/pages/ChestPage.tsx
+++ b/frontend/src/pages/ChestPage.tsx
@@ -275,8 +275,9 @@ const ChestPage = () => {
   }
 
   const totalPool = chest.pool_a + chest.pool_b;
-  const oddsA = totalPool > 0 ? (totalPool * 0.9) / chest.pool_a : 0;
-  const oddsB = totalPool > 0 ? (totalPool * 0.9) / chest.pool_b : 0;
+  // 修改赔率计算方式，只对获胜方抽水
+  const oddsA = totalPool > 0 ? (chest.pool_a + chest.pool_b * 0.9) / chest.pool_a : 0;
+  const oddsB = totalPool > 0 ? (chest.pool_b + chest.pool_a * 0.9) / chest.pool_b : 0;
 
   // 计算用户在当前宝箱各选项上的累计下注金额
   const userBetsOnA = bets
@@ -388,9 +389,9 @@ const ChestPage = () => {
                   disabled={chest.status !== 0}
                 />
                 <div className="quick-amounts">
-                  <button onClick={() => setBetAmount('100')}>100</button>
-                  <button onClick={() => setBetAmount('500')}>500</button>
                   <button onClick={() => setBetAmount('1000')}>1000</button>
+                  <button onClick={() => setBetAmount('10000')}>10000</button>
+                  <button onClick={() => setBetAmount('100000')}>100000</button>
                   <button onClick={() => setBetAmount(user?.balance.toString() || '0')}>
                     全押
                   </button>