diff --git a/app/hooks/useBodyScrollLock.js b/app/hooks/useBodyScrollLock.js
new file mode 100644
index 0000000..4b76395
--- /dev/null
+++ b/app/hooks/useBodyScrollLock.js
@@ -0,0 +1,18 @@
+import { useEffect } from "react";
+
+export function useBodyScrollLock(open) {
+  useEffect(() => {
+    if (!open) return;
+
+    const scrollY = window.scrollY;
+
+    document.body.style.position = "fixed";
+    document.body.style.top = `-${scrollY}px`;
+
+    return () => {
+      document.body.style.position = "";
+      document.body.style.top = "";
+      window.scrollTo(0, scrollY);
+    };
+  }, [open]);
+}
\ No newline at end of file
diff --git a/components/ui/dialog.jsx b/components/ui/dialog.jsx
index 1038cfa..eb8f219 100644
--- a/components/ui/dialog.jsx
+++ b/components/ui/dialog.jsx
@@ -6,11 +6,38 @@ import { Dialog as DialogPrimitive } from "radix-ui"
 
 import { cn } from "@/lib/utils"
 import {CloseIcon} from "@/app/components/Icons";
+import { useBodyScrollLock } from "../../app/hooks/useBodyScrollLock";
 
 function Dialog({
+  open: openProp,
+  defaultOpen,
+  onOpenChange,
   ...props
 }) {
-  return <DialogPrimitive.Root data-slot="dialog" {...props} />;
+  const [uncontrolledOpen, setUncontrolledOpen] = React.useState(defaultOpen ?? false);
+  const isControlled = openProp !== undefined;
+  const currentOpen = isControlled ? openProp : uncontrolledOpen;
+
+  // 使用全局 hook 统一处理 body 滚动锁定 & 恢复，避免弹窗打开时页面跳到顶部
+  useBodyScrollLock(currentOpen);
+
+  const handleOpenChange = React.useCallback(
+    (next) => {
+      if (!isControlled) setUncontrolledOpen(next);
+      onOpenChange?.(next);
+    },
+    [isControlled, onOpenChange]
+  );
+
+  return (
+    <DialogPrimitive.Root
+      data-slot="dialog"
+      open={isControlled ? openProp : undefined}
+      defaultOpen={defaultOpen}
+      onOpenChange={handleOpenChange}
+      {...props}
+    />
+  );
 }
 
 function DialogTrigger({
diff --git a/components/ui/drawer.jsx b/components/ui/drawer.jsx
index e9c15f8..b06ffb6 100644
--- a/components/ui/drawer.jsx
+++ b/components/ui/drawer.jsx
@@ -4,6 +4,7 @@ import * as React from "react"
 import { Drawer as DrawerPrimitive } from "vaul"
 
 import { cn } from "@/lib/utils"
+import { useBodyScrollLock } from "../../app/hooks/useBodyScrollLock"
 
 const DrawerScrollLockContext = React.createContext(null)
 
@@ -12,36 +13,12 @@ const DrawerScrollLockContext = React.createContext(null)
  * 既锁定滚动又保留视觉位置；overlay 上 ontouchmove preventDefault 防止背景触摸滚动。
  */
 function useScrollLock(open) {
-  const savedScrollYRef = React.useRef(0)
   const onOverlayTouchMove = React.useCallback((e) => {
     e.preventDefault()
   }, [])
 
-  React.useEffect(() => {
-    if (!open || typeof document === "undefined") return
-    const scrollY = window.scrollY ?? window.pageYOffset
-    savedScrollYRef.current = scrollY
-    const prev = {
-      position: document.body.style.position,
-      top: document.body.style.top,
-      left: document.body.style.left,
-      right: document.body.style.right,
-      width: document.body.style.width,
-    }
-    document.body.style.position = "fixed"
-    document.body.style.top = `-${scrollY}px`
-    document.body.style.left = "0"
-    document.body.style.right = "0"
-    document.body.style.width = "100%"
-    return () => {
-      document.body.style.position = prev.position
-      document.body.style.top = prev.top
-      document.body.style.left = prev.left
-      document.body.style.right = prev.right
-      document.body.style.width = prev.width
-      window.scrollTo(0, savedScrollYRef.current)
-    }
-  }, [open])
+  // 统一使用 app 级 hook 处理 body 滚动锁定 & 恢复，避免多处实现导致位移/跳顶问题
+  useBodyScrollLock(open)
 
   return React.useMemo(
     () => (open ? { onTouchMove: onOverlayTouchMove } : null),