diff --git a/assets/script/game/common/config/CardSet.ts b/assets/script/game/common/config/CardSet.ts
index 30522e7b..af194a74 100644
--- a/assets/script/game/common/config/CardSet.ts
+++ b/assets/script/game/common/config/CardSet.ts
@@ -105,6 +105,14 @@ HeroList.forEach(uuid => {
         const offset = pLv - basePoolLv;
         const targetHeroLv = baseHeroLv + offset;
 
+        // 【修改开始】永远只刷 lv1 等级的英雄卡牌，不再出现某英雄的 lv2 等级卡牌
+        // 设置为 true 则开启该限制。保留原有代码逻辑以便后续有变直接引用。
+        const ONLY_SPAWN_LV1_HERO = true;
+        if (ONLY_SPAWN_LV1_HERO && targetHeroLv > 1) {
+            break;
+        }
+        // 【修改结束】
+
         // 英雄的最高等级 是MERGE_MAX-1
         if (targetHeroLv > FightSet.MERGE_MAX - 1) {
             break;
@@ -304,6 +312,16 @@ export const drawCardsByRule = (
             const typeSet = normalizeTypeFilter(options.type)
             pool = pool.filter(card => typeSet.has(card.type))
         }
+
+        // 如果强制筛选后池子为空（比如开启了 ONLY_SPAWN_LV1_HERO 导致没有高等级英雄卡），
+        // 且需要抽取英雄，则兜底降级回 pool_lv 为 1 的卡池，保证系统不会卡死
+        if (pool.length === 0) {
+            pool = CardPoolList.filter(card => card.pool_lv === 1);
+            if (options.type !== undefined) {
+                const typeSet = normalizeTypeFilter(options.type)
+                pool = pool.filter(card => typeSet.has(card.type))
+            }
+        }
     }
     if (options.heroType !== undefined || options.heroLv !== undefined) {
         pool = pool.filter(card => {