diff --git a/backend/app/Command/CleanRequestLogsCommand.php b/backend/app/Command/CleanRequestLogsCommand.php
new file mode 100644
index 0000000..45065e3
--- /dev/null
+++ b/backend/app/Command/CleanRequestLogsCommand.php
@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Command;
+
+use App\Model\ApiRequestLog;
+use Carbon\Carbon;
+use Hyperf\Command\Annotation\Command;
+use Hyperf\Command\Command as HyperfCommand;
+use Psr\Container\ContainerInterface;
+use Symfony\Component\Console\Input\InputOption;
+
+#[Command]
+class CleanRequestLogsCommand extends HyperfCommand
+{
+    public function __construct(protected ContainerInterface $container)
+    {
+        parent::__construct('log:clean-requests');
+    }
+
+    public function configure(): void
+    {
+        parent::configure();
+        $this->setDescription('清理过期的 API 请求日志');
+        $this->addOption('days', 'd', InputOption::VALUE_OPTIONAL, '保留天数', 90);
+    }
+
+    public function handle(): void
+    {
+        $days = (int) $this->input->getOption('days');
+        $cutoff = Carbon::now()->subDays($days);
+
+        $deleted = ApiRequestLog::query()
+            ->where('created_at', '<', $cutoff)
+            ->delete();
+
+        $this->info("已清理 {$deleted} 条超过 {$days} 天的请求日志。");
+    }
+}