diff --git a/server/app/api/controller/GameController.php b/server/app/api/controller/GameController.php
index 40839ef..072f097 100644
--- a/server/app/api/controller/GameController.php
+++ b/server/app/api/controller/GameController.php
@@ -79,11 +79,14 @@ class GameController extends OpenController
      * 获取彩金池（中奖配置表）
      * GET /api/game/lotteryPool
      * header: token
-     * 返回 DiceRewardConfig 列表（彩金池/中奖配置）
+     * 返回 DiceRewardConfig 列表（彩金池/中奖配置），不包含 tier=BIGWIN
      */
     public function lotteryPool(Request $request): Response
     {
         $list = DiceRewardConfig::getCachedList();
+        $list = array_values(array_filter($list, function ($row) {
+            return (string) ($row['tier'] ?? '') !== 'BIGWIN';
+        }));
         return $this->success($list);
     }
 
diff --git a/server/app/dice/model/reward_config/DiceRewardConfig.php b/server/app/dice/model/reward_config/DiceRewardConfig.php
index 82162b2..a5517d7 100644
--- a/server/app/dice/model/reward_config/DiceRewardConfig.php
+++ b/server/app/dice/model/reward_config/DiceRewardConfig.php
@@ -92,10 +92,13 @@ class DiceRewardConfig extends BaseModel
         foreach ($list as $row) {
             $tier = isset($row['tier']) ? (string) $row['tier'] : '';
             if ($tier !== '') {
-                if (!isset($byTier[$tier])) {
-                    $byTier[$tier] = [];
+                // 过滤 tier=BIGWIN：不参与档位抽奖，仅豹子时通过 getCachedByTierAndGridNumber('BIGWIN', ...) 使用
+                if ($tier !== 'BIGWIN') {
+                    if (!isset($byTier[$tier])) {
+                        $byTier[$tier] = [];
+                    }
+                    $byTier[$tier][] = $row;
                 }
-                $byTier[$tier][] = $row;
                 $gridNum = isset($row['grid_number']) ? (int) $row['grid_number'] : 0;
                 if (!isset($byTierGrid[$tier])) {
                     $byTierGrid[$tier] = [];