diff --git a/app/Http/Controllers/ChatController.php b/app/Http/Controllers/ChatController.php
index 7ecbbb7..c3b22c8 100644
--- a/app/Http/Controllers/ChatController.php
+++ b/app/Http/Controllers/ChatController.php
@@ -714,7 +714,7 @@ class ChatController extends Controller
     public function uploadAvatar(Request $request): JsonResponse
     {
         $request->validate([
-            'file' => 'required|image|mimes:jpeg,png,jpg,gif,webp|max:2048',
+            'file' => 'required|image|mimes:jpeg,png,jpg,gif,webp|max:6144',
         ]);
 
         $user = Auth::user();
@@ -726,17 +726,22 @@ class ChatController extends Controller
 
         try {
             $manager = new ImageManager(new Driver);
-            $image = $manager->read($file);
-
-            // 裁剪正方形并压缩为 112x112
-            $image->cover(112, 112);
 
             // 生成相对路径
             $filename = 'custom_'.$user->id.'_'.time().'.'.$file->extension();
+            $originalFilename = 'custom_'.$user->id.'_'.time().'_original.'.$file->extension();
             $path = 'avatars/'.$filename;
+            $originalPath = 'avatars/'.$originalFilename;
 
-            // 保存以高质量 JPG 或原格式
-            Storage::disk('public')->put($path, (string) $image->encode());
+            // 1. 处理原图：限制最大宽度为 1280 以免过大，保存原比例高清大图
+            $originalImage = $manager->read($file);
+            $originalImage->scaleDown(width: 1280);
+            Storage::disk('public')->put($originalPath, (string) $originalImage->encode());
+
+            // 2. 处理缩略图：裁剪正方形并压缩为 112x112
+            $thumbImage = $manager->read($file);
+            $thumbImage->cover(112, 112);
+            Storage::disk('public')->put($path, (string) $thumbImage->encode());
 
             $dbValue = 'storage/'.$path;
 
diff --git a/app/Http/Controllers/UserController.php b/app/Http/Controllers/UserController.php
index 5529256..81716f0 100644
--- a/app/Http/Controllers/UserController.php
+++ b/app/Http/Controllers/UserController.php
@@ -40,6 +40,16 @@ class UserController extends Controller
         $targetUser = User::where('username', $username)->firstOrFail();
         $operator = Auth::user();
 
+        // 探测原图
+        $headfaceOriginal = $targetUser->headfaceUrl;
+        if (str_starts_with((string) $targetUser->headface, 'storage/')) {
+            $info = pathinfo($targetUser->headface);
+            $origPath = $info['dirname'].'/'.$info['filename'].'_original.'.($info['extension'] ?? 'jpg');
+            if (\Illuminate\Support\Facades\Storage::disk('public')->exists(substr($origPath, 8))) {
+                $headfaceOriginal = '/'.$origPath;
+            }
+        }
+
         // 基础公开信息
         $activePosition = $targetUser->activePosition?->load('position.department')->position;
         $data = [
@@ -48,6 +58,7 @@ class UserController extends Controller
                 1 => '男', 2 => '女', default => ''
             },
             'headface' => $targetUser->headface,
+            'headface_original' => $headfaceOriginal,
             'usersf' => $targetUser->usersf,
             'user_level' => $targetUser->user_level,
             'qianming' => $targetUser->qianming,
diff --git a/app/Models/User.php b/app/Models/User.php
index 093bc80..662e719 100644
--- a/app/Models/User.php
+++ b/app/Models/User.php
@@ -141,7 +141,10 @@ class User extends Authenticatable
         $hf = (string) $this->usersf;
         if (str_starts_with($hf, 'storage/')) {
             $path = substr($hf, 8); // 去除 'storage/' 前缀
-            \Illuminate\Support\Facades\Storage::disk('public')->delete($path);
+            $info = pathinfo($path);
+            $origPath = $info['dirname'].'/'.$info['filename'].'_original.'.($info['extension'] ?? 'jpg');
+
+            \Illuminate\Support\Facades\Storage::disk('public')->delete([$path, $origPath]);
         }
     }
 
diff --git a/resources/views/chat/frame.blade.php b/resources/views/chat/frame.blade.php
index aa6fd57..7bf6409 100644
--- a/resources/views/chat/frame.blade.php
+++ b/resources/views/chat/frame.blade.php
@@ -56,6 +56,7 @@
                             'username' => $botUser->username,
                             'level' => $botUser->user_level,
                             'sex' => $botUser->sex,
+                            'headface' => $botUser->headface,
                             'headfaceUrl' => $botUser->headfaceUrl,
                             'vip_icon' => $botUser->vipIcon(),
                             'vip_name' => $botUser->vipName(),
diff --git a/resources/views/chat/partials/user-actions.blade.php b/resources/views/chat/partials/user-actions.blade.php
index b11b370..b3d1337 100644
--- a/resources/views/chat/partials/user-actions.blade.php
+++ b/resources/views/chat/partials/user-actions.blade.php
@@ -87,6 +87,7 @@
     function userCardComponent() {
         return {
             showUserModal: false,
+            showOriginalLightbox: false,
             userInfo: {
                 position_history: []
             },
@@ -605,7 +606,12 @@
                 <div class="profile-row">
                     <img class="profile-avatar" x-show="userInfo.headface"
                         :src="(userInfo.headface || '1.gif').startsWith('storage/') ? '/' + (userInfo.headface || '1.gif') : '/images/headface/' + (userInfo.headface || '1.gif')"
-                        x-on:error="$el.style.display='none'">
+                        x-on:error="$el.style.display='none'"
+                        style="cursor: pointer; transition: transform 0.2s;"
+                        x-on:click="if(userInfo.headface) showOriginalLightbox = true"
+                        title="点击查看大图"
+                        onmouseover="this.style.transform='scale(1.05)'"
+                        onmouseout="this.style.transform='scale(1)'">
                     <div class="profile-info">
                         <h4>
                             <span x-text="userInfo.username"></span>
@@ -1071,6 +1077,15 @@
             </div>
         </div>
     </div>
+
+    {{-- 头像原图全屏大图预览灯箱 --}}
+    <template x-if="userInfo">
+        <div x-show="showOriginalLightbox" style="display: none; z-index: 10000; background: rgba(0,0,0,0.85); backdrop-filter: blur(5px);" class="modal-overlay" x-on:click.self="showOriginalLightbox = false" x-transition.opacity>
+            <div style="position: absolute; top: 20px; right: 26px; color: rgba(255,255,255,0.7); font-size: 36px; cursor: pointer; transition: color 0.2s;" x-on:click="showOriginalLightbox = false" onmouseover="this.style.color='white'" onmouseout="this.style.color='rgba(255,255,255,0.7)'">&times;</div>
+            <img :src="userInfo.headface_original ? userInfo.headface_original : ((userInfo.headface || '1.gif').startsWith('storage/') ? '/' + (userInfo.headface || '1.gif') : '/images/headface/' + (userInfo.headface || '1.gif'))"
+                 style="position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); max-width: 90vw; max-height: 90vh; object-fit: contain; border-radius: 8px; box-shadow: 0 10px 40px rgba(0,0,0,0.5);">
+        </div>
+    </template>
 </div>
 
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