diff --git a/Cunkebao/src/components/DeviceSelection.tsx b/Cunkebao/src/components/DeviceSelection.tsx
index facb7086..be80a70a 100644
--- a/Cunkebao/src/components/DeviceSelection.tsx
+++ b/Cunkebao/src/components/DeviceSelection.tsx
@@ -120,7 +120,13 @@ export default function DeviceSelection({
 
       {/* 设备选择弹窗 */}
       <Dialog open={dialogOpen} onOpenChange={setDialogOpen}>
-        <DialogContent className="w-full h-full max-w-none max-h-none flex flex-col bg-white">
+        <DialogContent
+          className="w-full h-full max-w-none max-h-none flex flex-col bg-white"
+          aria-describedby="device-selection-description"
+        >
+          <div id="device-selection-description" className="sr-only">
+            请选择一个或多个设备，支持搜索和筛选。
+          </div>
           <DialogHeader>
             <DialogTitle>选择设备</DialogTitle>
           </DialogHeader>
diff --git a/Cunkebao/src/components/DeviceSelectionDialog.tsx b/Cunkebao/src/components/DeviceSelectionDialog.tsx
index 417a23f3..ebce30dd 100644
--- a/Cunkebao/src/components/DeviceSelectionDialog.tsx
+++ b/Cunkebao/src/components/DeviceSelectionDialog.tsx
@@ -122,7 +122,13 @@ export function DeviceSelectionDialog({
 
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="w-full h-full max-w-none max-h-none flex flex-col bg-white">
+      <DialogContent
+        className="w-full h-full max-w-none max-h-none flex flex-col bg-white"
+        aria-describedby="device-selection-dialog-description"
+      >
+        <div id="device-selection-dialog-description" className="sr-only">
+          请选择一个或多个设备，支持搜索和筛选。
+        </div>
         <DialogHeader>
           <DialogTitle>选择设备</DialogTitle>
         </DialogHeader>
diff --git a/Cunkebao/src/components/FriendSelection.tsx b/Cunkebao/src/components/FriendSelection.tsx
index f98a6d62..fb9cd8dc 100644
--- a/Cunkebao/src/components/FriendSelection.tsx
+++ b/Cunkebao/src/components/FriendSelection.tsx
@@ -229,7 +229,13 @@ export default function FriendSelection({
 
       {/* 微信好友选择弹窗 */}
       <Dialog open={dialogOpen} onOpenChange={setDialogOpen}>
-        <DialogContent className="w-full h-full max-w-none max-h-none flex flex-col p-0 gap-0 overflow-hidden bg-white">
+        <DialogContent
+          className="w-full h-full max-w-none max-h-none flex flex-col p-0 gap-0 overflow-hidden bg-white"
+          aria-describedby="friend-selection-description"
+        >
+          <div id="friend-selection-description" className="sr-only">
+            请选择一个或多个微信好友，支持搜索和分页。
+          </div>
           <div className="p-6">
             <DialogTitle className="text-center text-xl font-medium mb-6">
               选择微信好友
diff --git a/Cunkebao/src/components/GroupSelection.tsx b/Cunkebao/src/components/GroupSelection.tsx
index c7b0d252..f2caef9d 100644
--- a/Cunkebao/src/components/GroupSelection.tsx
+++ b/Cunkebao/src/components/GroupSelection.tsx
@@ -193,7 +193,13 @@ export default function GroupSelection({
 
       {/* 群组选择弹窗 */}
       <Dialog open={dialogOpen} onOpenChange={setDialogOpen}>
-        <DialogContent className="w-full h-full max-w-none max-h-none flex flex-col p-0 gap-0 overflow-hidden bg-white">
+        <DialogContent
+          className="w-full h-full max-w-none max-h-none flex flex-col p-0 gap-0 overflow-hidden bg-white"
+          aria-describedby="group-selection-description"
+        >
+          <div id="group-selection-description" className="sr-only">
+            请选择一个或多个群聊，支持搜索和分页。
+          </div>
           <div className="p-6">
             <DialogTitle className="text-center text-xl font-medium mb-6">
               选择群聊