diff --git a/lib/pages/discover/live_room_page.dart b/lib/pages/discover/live_room_page.dart
index ff7bc85..1611e89 100644
--- a/lib/pages/discover/live_room_page.dart
+++ b/lib/pages/discover/live_room_page.dart
@@ -344,7 +344,21 @@ class _LiveRoomPageState extends State<LiveRoomPage> {
             // SVGA 动画播放组件
             const SvgaPlayerWidget(),
             // 输入对话框
-            if (_showInputDialog)
+            if (_showInputDialog) ...[
+              // 遮罩层，点击时隐藏对话框和键盘（放在对话框下方，对话框会在上面拦截点击）
+              Positioned.fill(
+                child: GestureDetector(
+                  behavior: HitTestBehavior.opaque,
+                  onTap: () {
+                    // 隐藏键盘
+                    FocusScope.of(context).unfocus();
+                    // 隐藏对话框
+                    _hideInputDialog();
+                  },
+                  child: Container(color: Colors.transparent),
+                ),
+              ),
+              // 输入对话框（放在遮罩层上面，会自动拦截点击事件）
               AnimatedPositioned(
                 duration: const Duration(milliseconds: 200),
                 curve: Curves.easeOut,
@@ -358,6 +372,7 @@ class _LiveRoomPageState extends State<LiveRoomPage> {
                   onClose: _hideInputDialog,
                 ),
               ),
+            ],
           ],
         ),
       ),