diff --git a/src/ProChat/components/ScrollAnchor/index.tsx b/src/ProChat/components/ScrollAnchor/index.tsx
index b744a6ed..299a872c 100644
--- a/src/ProChat/components/ScrollAnchor/index.tsx
+++ b/src/ProChat/components/ScrollAnchor/index.tsx
@@ -1,4 +1,4 @@
-import { memo, useEffect } from 'react';
+import { memo, useEffect, useState } from 'react';
 import { useInView } from 'react-intersection-observer';
 
 import { useStore } from '@/ProChat/store';
@@ -10,15 +10,31 @@ const ChatScrollAnchor = memo(() => {
   const trackVisibility = useStore((s) => !!s.chatLoadingId);
   const str = useStore(chatSelectors.currentChats);
 
+  const [isWindowAvailable, setIsWindowAvailable] = useState(false);
+
+  useEffect(() => {
+    // 检查window对象是否已经可用
+    if (typeof window !== 'undefined') {
+      setIsWindowAvailable(true);
+    }
+  }, []);
+
   const { ref, entry, inView } = useInView({
     delay: 100,
     rootMargin: '0px 0px -150px 0px',
     trackVisibility,
   });
 
-  // 如果是移动端，可能200太多了，认为超过 1/3 即可，PC默认200
-  const ScrollOffset = window.innerHeight / 3 > 200 ? 200 : window.innerHeight / 4;
-  const isAtBottom = useAtBottom(ScrollOffset);
+  const [scrollOffset, setScrollOffset] = useState(0);
+
+  useEffect(() => {
+    if (isWindowAvailable) {
+      // 如果是移动端，可能200太多了，认为超过 1/3 即可，PC默认200
+      setScrollOffset(window.innerHeight / 3 > 200 ? 200 : window.innerHeight / 4);
+    }
+  }, [isWindowAvailable]);
+
+  const isAtBottom = useAtBottom(scrollOffset);
 
   useEffect(() => {
     if (isAtBottom && trackVisibility && !inView) {