diff --git a/app/Console/Commands/ClearRoomOnlineCache.php b/app/Console/Commands/ClearRoomOnlineCache.php
new file mode 100644
index 0000000..bbf385d
--- /dev/null
+++ b/app/Console/Commands/ClearRoomOnlineCache.php
@@ -0,0 +1,65 @@
+<?php
+
+/**
+ * 文件功能：清理房间在线名单的 Redis 缓存
+ * 用于清除历史遗留的「幽灵在线」脏数据
+ *
+ * 执行方式：php artisan room:clear-online-cache
+ *
+ * @author   ChatRoom Laravel
+ *
+ * @version  1.0.0
+ */
+
+namespace App\Console\Commands;
+
+use Illuminate\Console\Command;
+use Illuminate\Support\Facades\Redis;
+
+class ClearRoomOnlineCache extends Command
+{
+    /**
+     * Artisan 命令名称
+     *
+     * @var string
+     */
+    protected $signature = 'room:clear-online-cache';
+
+    /**
+     * 命令描述
+     *
+     * @var string
+     */
+    protected $description = '清空所有房间的 Redis 在线名单（清除幽灵在线脏数据）';
+
+    /**
+     * 执行命令
+     *
+     * 扫描所有 room:*:users Redis Key 并删除，让用户重新进房时写入干净数据。
+     */
+    public function handle(): int
+    {
+        $prefix  = config('database.redis.options.prefix', '');
+        $cursor  = '0';
+        $cleaned = 0;
+
+        $this->info("Redis 前缀：\"{$prefix}\"");
+        $this->info('开始扫描 room:*:users ...');
+
+        do {
+            [$cursor, $keys] = Redis::scan($cursor, ['match' => $prefix.'room:*:users', 'count' => 100]);
+            foreach ($keys ?? [] as $fullKey) {
+                // 去掉 Redis 前缀，还原为 Laravel Facade 使用的短 Key
+                $shortKey = $prefix ? substr($fullKey, strlen($prefix)) : $fullKey;
+                Redis::del($shortKey);
+                $this->line("  ✓ 已清除：{$shortKey}");
+                $cleaned++;
+            }
+        } while ($cursor !== '0');
+
+        $this->info("完成！共清理 {$cleaned} 个房间的在线名单。");
+        $this->info('用户下次进房会重新写入正确数据，人数从 0 开始准确累计。');
+
+        return self::SUCCESS;
+    }
+}