diff --git a/resources/js/chat-room/fishing.js b/resources/js/chat-room/fishing.js
index 174e97c..282f763 100644
--- a/resources/js/chat-room/fishing.js
+++ b/resources/js/chat-room/fishing.js
@@ -200,34 +200,41 @@ function setFishingButton(text, disabled) {
 }
 
 /**
- * 启动自动钓鱼冷却倒计时。
+ * 启动自动钓鱼冷却倒计时（基于时间戳，不受浏览器后台节流影响）。
  *
- * @param {number} cooldown
+ * @param {number} cooldown 冷却秒数
  * @returns {void}
  */
 function startAutoFishingCooldown(cooldown) {
-    let remaining = cooldown;
-    setFishingButton(`⏳ 冷却 ${remaining}s`, true);
+    const endTime = Date.now() + cooldown * 1000;
+    setFishingButton(`⏳ 冷却 ${cooldown}s`, true);
     showAutoFishStopButton(cooldown);
 
+    // 基于时间戳更新倒计时 UI — 后台节流后回来也能准确显示
     autoFishCooldownCountdown = window.setInterval(() => {
-        remaining -= 1;
+        const remaining = Math.max(0, Math.ceil((endTime - Date.now()) / 1000));
         setFishingButton(`⏳ 冷却 ${remaining}s`, true);
 
         if (remaining <= 0) {
             window.clearInterval(autoFishCooldownCountdown);
             autoFishCooldownCountdown = null;
         }
-    }, 1000);
+    }, 200);
 
-    autoFishCooldownTimer = window.setTimeout(() => {
-        autoFishCooldownTimer = null;
-        hideAutoFishStopButton();
-
-        if (autoFishing) {
-            void startFishing();
+    // 基于时间戳检测冷却结束 — 后台节流后立即触发
+    autoFishCooldownTimer = null;
+    const checkEnd = () => {
+        if (Date.now() >= endTime) {
+            autoFishCooldownTimer = null;
+            hideAutoFishStopButton();
+            if (autoFishing) {
+                void startFishing();
+            }
+            return;
         }
-    }, cooldown * 1000);
+        autoFishCooldownTimer = window.setTimeout(checkEnd, 200);
+    };
+    autoFishCooldownTimer = window.setTimeout(checkEnd, Math.min(cooldown * 1000, 200));
 }
 
 /**