diff --git a/app/Services/SystemSettingService.php b/app/Services/SystemSettingService.php
new file mode 100644
index 0000000..7f64fc8
--- /dev/null
+++ b/app/Services/SystemSettingService.php
@@ -0,0 +1,77 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\SystemSetting;
+use Illuminate\Support\Collection;
+use Illuminate\Support\Facades\Cache;
+
+/**
+ * 系统设置服务类
+ * 
+ * 提供系统设置的业务逻辑处理
+ */
+class SystemSettingService
+{
+    /**
+     * 缓存键名
+     */
+    private const CACHE_KEY = 'system_settings_grouped';
+
+    /**
+     * 缓存时间（秒）- 24小时
+     */
+    private const CACHE_TTL = 86400;
+
+    /**
+     * 获取按分组组织的所有系统设置
+     * 
+     * @return array<string, array> 按group分组的配置数组
+     */
+    public function getGroupedSettings(): array
+    {
+        return Cache::remember(self::CACHE_KEY, self::CACHE_TTL, function () {
+            return SystemSetting::all()
+                ->groupBy('group')
+                ->map(function (Collection $settings) {
+                    return $settings->map(function (SystemSetting $setting) {
+                        return [
+                            'id' => $setting->id,
+                            'key' => $setting->key,
+                            'value' => $setting->value,
+                            'description' => $setting->description,
+                            'is_public' => $setting->is_public,
+                            'updated_at' => $setting->updated_at,
+                        ];
+                    })->values()->toArray();
+                })
+                ->toArray();
+        });
+    }
+
+    /**
+     * 批量更新系统设置
+     * 
+     * @param array $settings 配置数组，格式为 ['key' => 'value', ...]
+     * @return void
+     */
+    public function updateSettings(array $settings): void
+    {
+        foreach ($settings as $key => $value) {
+            SystemSetting::set($key, $value);
+        }
+
+        // 清除缓存
+        $this->clearCache();
+    }
+
+    /**
+     * 清除系统设置缓存
+     * 
+     * @return void
+     */
+    public function clearCache(): void
+    {
+        Cache::forget(self::CACHE_KEY);
+    }
+}