diff --git a/lib/pages/live_room/superchat/superchat_card.dart b/lib/pages/live_room/superchat/superchat_card.dart
index f90e51c26..5195c21a7 100644
--- a/lib/pages/live_room/superchat/superchat_card.dart
+++ b/lib/pages/live_room/superchat/superchat_card.dart
@@ -20,13 +20,13 @@ class SuperChatCard extends StatefulWidget {
     required this.item,
     this.onRemove,
     this.persistentSC = false,
-    required this.onReport,
+    this.onReport,
   });
 
   final SuperChatItem item;
   final VoidCallback? onRemove;
   final bool persistentSC;
-  final VoidCallback onReport;
+  final VoidCallback? onReport;
 
   @override
   State<SuperChatCard> createState() => _SuperChatCardState();
@@ -168,6 +168,7 @@ class _SuperChatCardState extends State<SuperChatCard> {
     }
 
     return Column(
+      mainAxisSize: .min,
       crossAxisAlignment: CrossAxisAlignment.stretch,
       children: [
         GestureDetector(
diff --git a/lib/pages/live_room/view.dart b/lib/pages/live_room/view.dart
index 8bc25bc84..24d83dcf7 100644
--- a/lib/pages/live_room/view.dart
+++ b/lib/pages/live_room/view.dart
@@ -46,6 +46,7 @@ import 'package:PiliPlus/utils/platform_utils.dart';
 import 'package:PiliPlus/utils/share_utils.dart';
 import 'package:PiliPlus/utils/storage.dart';
 import 'package:PiliPlus/utils/storage_key.dart';
+import 'package:PiliPlus/utils/storage_pref.dart';
 import 'package:PiliPlus/utils/utils.dart';
 import 'package:cached_network_image/cached_network_image.dart';
 import 'package:canvas_danmaku/canvas_danmaku.dart';
@@ -65,6 +66,7 @@ class LiveRoomPage extends StatefulWidget {
 
 class _LiveRoomPageState extends State<LiveRoomPage>
     with WidgetsBindingObserver, RouteAware, RouteAwareMixin {
+  late final fullScreenSCWidth = Pref.fullScreenSCWidth;
   final String heroTag = Utils.generateRandomString(6);
   late final LiveRoomController _liveRoomController;
   late final PlPlayerController plPlayerController;
@@ -322,7 +324,7 @@ class _LiveRoomPageState extends State<LiveRoomPage>
           Positioned(
             left: padding.left + 25,
             bottom: 25,
-            width: 255,
+            width: fullScreenSCWidth,
             child: Obx(() {
               final item = _liveRoomController.fsSC.value;
               if (item == null) {
diff --git a/lib/pages/setting/models/play_settings.dart b/lib/pages/setting/models/play_settings.dart
index c21977fb3..c240ef005 100644
--- a/lib/pages/setting/models/play_settings.dart
+++ b/lib/pages/setting/models/play_settings.dart
@@ -5,6 +5,7 @@ import 'package:PiliPlus/models/common/super_chat_type.dart';
 import 'package:PiliPlus/models/common/video/subtitle_pref_type.dart';
 import 'package:PiliPlus/pages/main/controller.dart';
 import 'package:PiliPlus/pages/setting/models/model.dart';
+import 'package:PiliPlus/pages/setting/pages/fullscreen_sc_size.dart';
 import 'package:PiliPlus/pages/setting/widgets/select_dialog.dart';
 import 'package:PiliPlus/plugin/pl_player/models/bottom_progress_behavior.dart';
 import 'package:PiliPlus/plugin/pl_player/models/fullscreen_mode.dart';
@@ -145,6 +146,12 @@ List<SettingsModel> get playSettings => [
     getSubtitle: () => '当前:「${Pref.superChatType.title}」',
     onTap: _showSuperChatDialog,
   ),
+  NormalModel(
+    title: '全屏 SC 大小',
+    subtitle: 'SuperChat (醒目留言) 大小设置',
+    leading: const Icon(Icons.open_in_full),
+    onTap: (_, _) => Get.to(const FullScreenScSize()),
+  ),
   const SwitchModel(
     title: '竖屏扩大展示',
     subtitle: '小屏竖屏视频宽高比由16:9扩大至1:1（不支持收起）；横屏适配时，扩大至9:16',
diff --git a/lib/pages/setting/pages/fullscreen_sc_size.dart b/lib/pages/setting/pages/fullscreen_sc_size.dart
new file mode 100644
index 000000000..339efd1da
--- /dev/null
+++ b/lib/pages/setting/pages/fullscreen_sc_size.dart
@@ -0,0 +1,141 @@
+import 'dart:io' show Platform;
+import 'dart:math' as math;
+
+import 'package:PiliPlus/common/widgets/extra_hittest_stack.dart';
+import 'package:PiliPlus/models_new/live/live_superchat/item.dart';
+import 'package:PiliPlus/pages/live_room/superchat/superchat_card.dart';
+import 'package:PiliPlus/plugin/pl_player/utils/fullscreen.dart';
+import 'package:PiliPlus/utils/platform_utils.dart';
+import 'package:PiliPlus/utils/storage.dart';
+import 'package:PiliPlus/utils/storage_key.dart';
+import 'package:PiliPlus/utils/storage_pref.dart';
+import 'package:flutter/material.dart';
+
+const kFullScreenSCWidth = 255.0;
+
+class FullScreenScSize extends StatefulWidget {
+  const FullScreenScSize({super.key});
+
+  @override
+  State<FullScreenScSize> createState() => _FullScreenScSizeState();
+}
+
+class _FullScreenScSizeState extends State<FullScreenScSize> {
+  double _width = Pref.fullScreenSCWidth;
+  final _randomSC = SuperChatItem.random;
+  late EdgeInsets _padding;
+  late ColorScheme _colorScheme;
+
+  @override
+  void initState() {
+    super.initState();
+    if (Platform.isAndroid) {
+      landscapeLeftMode();
+    } else if (Platform.isIOS) {
+      landscapeRightMode();
+    }
+  }
+
+  @override
+  void dispose() {
+    if (PlatformUtils.isMobile) {
+      if (Pref.horizontalScreen) {
+        fullMode();
+      } else {
+        portraitUpMode();
+      }
+    }
+    super.dispose();
+  }
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    final padding = MediaQuery.viewPaddingOf(context);
+    _padding = .only(
+      right: padding.right + 17,
+      left: padding.left + 25,
+      bottom: padding.bottom + 25,
+    );
+    _colorScheme = ColorScheme.of(context);
+  }
+
+  void _onReset() {
+    _width = kFullScreenSCWidth;
+    GStorage.setting.delete(SettingBoxKey.fullScreenSCWidth);
+    setState(() {});
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      resizeToAvoidBottomInset: false,
+      appBar: AppBar(
+        title: const Text('全屏 SC 大小设置'),
+        actions: [
+          TextButton(onPressed: _onReset, child: const Text('重置')),
+        ],
+      ),
+      body: Padding(padding: _padding, child: _buildBody),
+    );
+  }
+
+  Widget get _buildBody {
+    return Align(
+      alignment: .bottomLeft,
+      child: ExtraHitTestStack(
+        clipBehavior: .none,
+        children: [
+          SizedBox(
+            width: _width,
+            child: IgnorePointer(
+              child: SuperChatCard(
+                item: _randomSC,
+                persistentSC: true,
+              ),
+            ),
+          ),
+          Positioned(
+            top: 0,
+            bottom: 0,
+            right: -17,
+            width: 34,
+            child: MouseRegion(
+              cursor: SystemMouseCursors.resizeRight,
+              child: GestureDetector(
+                behavior: .opaque,
+                onHorizontalDragUpdate: _onHorizontalDragUpdate,
+                onHorizontalDragEnd: _onHorizontalDragEnd,
+                child: DecoratedBox(
+                  decoration: BoxDecoration(
+                    shape: .circle,
+                    color: _colorScheme.secondaryContainer.withValues(
+                      alpha: .8,
+                    ),
+                  ),
+                  child: Transform.rotate(
+                    angle: math.pi / 4,
+                    child: Icon(
+                      size: 18,
+                      Icons.open_in_full,
+                      color: _colorScheme.onSecondaryContainer,
+                    ),
+                  ),
+                ),
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _onHorizontalDragUpdate(DragUpdateDetails details) {
+    _width = math.max(25.0, _width + details.delta.dx);
+    setState(() {});
+  }
+
+  void _onHorizontalDragEnd(DragEndDetails details) {
+    GStorage.setting.put(SettingBoxKey.fullScreenSCWidth, _width);
+  }
+}
diff --git a/lib/utils/storage_key.dart b/lib/utils/storage_key.dart
index 227cba460..a67fb8522 100644
--- a/lib/utils/storage_key.dart
+++ b/lib/utils/storage_key.dart
@@ -23,6 +23,7 @@ abstract final class SettingBoxKey {
       enableAutoExit = 'enableAutoExit',
       enableOnlineTotal = 'enableOnlineTotal',
       superChatType = 'superChatType',
+      fullScreenSCWidth = 'fullScreenSCWidth',
       keyboardControl = 'keyboardControl',
       pauseOnMinimize = 'pauseOnMinimize',
       pgcSkipType = 'pgcSkipType',
diff --git a/lib/utils/storage_pref.dart b/lib/utils/storage_pref.dart
index b7337cefe..b3d44be75 100644
--- a/lib/utils/storage_pref.dart
+++ b/lib/utils/storage_pref.dart
@@ -25,6 +25,8 @@ import 'package:PiliPlus/models/common/video/video_decode_type.dart';
 import 'package:PiliPlus/models/common/video/video_quality.dart';
 import 'package:PiliPlus/models/user/danmaku_rule.dart';
 import 'package:PiliPlus/models/user/info.dart';
+import 'package:PiliPlus/pages/setting/pages/fullscreen_sc_size.dart'
+    show kFullScreenSCWidth;
 import 'package:PiliPlus/plugin/pl_player/models/audio_output_type.dart';
 import 'package:PiliPlus/plugin/pl_player/models/bottom_progress_behavior.dart';
 import 'package:PiliPlus/plugin/pl_player/models/fullscreen_mode.dart';
@@ -892,6 +894,11 @@ abstract final class Pref {
         defaultValue: SuperChatType.valid.index,
       )];
 
+  static double get fullScreenSCWidth => _setting.get(
+    SettingBoxKey.fullScreenSCWidth,
+    defaultValue: kFullScreenSCWidth,
+  );
+
   static bool get minimizeOnExit =>
       _setting.get(SettingBoxKey.minimizeOnExit, defaultValue: true);