diff --git a/internal/repository/food.go b/internal/repository/food.go
new file mode 100644
index 0000000..e187262
--- /dev/null
+++ b/internal/repository/food.go
@@ -0,0 +1,105 @@
+package repository
+
+import (
+	"gotest/internal/model"
+
+	"gorm.io/gorm"
+)
+
+// FoodRepository 外卖数据访问层
+type FoodRepository struct {
+	db *gorm.DB
+}
+
+// NewFoodRepository 创建外卖仓库实例
+func NewFoodRepository(db *gorm.DB) *FoodRepository {
+	return &FoodRepository{db: db}
+}
+
+// ListCategories 获取餐厅分类列表
+func (r *FoodRepository) ListCategories() ([]model.RestaurantCategory, error) {
+	var categories []model.RestaurantCategory
+	if err := r.db.Order("sort ASC, id ASC").Find(&categories).Error; err != nil {
+		return nil, err
+	}
+	return categories, nil
+}
+
+// ListRestaurants 获取餐厅列表，支持分类过滤和关键词搜索
+func (r *FoodRepository) ListRestaurants(categoryID uint, keyword string, sort string, page, pageSize int) ([]model.Restaurant, int64, error) {
+	var restaurants []model.Restaurant
+	var total int64
+
+	query := r.db.Where("status = 1")
+	if categoryID > 0 {
+		query = query.Where("category_id = ?", categoryID)
+	}
+	if keyword != "" {
+		query = query.Where("name LIKE ? OR tags LIKE ?", "%"+keyword+"%", "%"+keyword+"%")
+	}
+
+	if err := query.Model(&model.Restaurant{}).Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	switch sort {
+	case "rating":
+		query = query.Order("rating DESC")
+	case "sales":
+		query = query.Order("sales DESC")
+	case "delivery_time":
+		query = query.Order("delivery_time ASC")
+	default:
+		query = query.Order("sort ASC, id DESC")
+	}
+
+	if page > 0 && pageSize > 0 {
+		offset := (page - 1) * pageSize
+		query = query.Offset(offset).Limit(pageSize)
+	}
+
+	if err := query.Find(&restaurants).Error; err != nil {
+		return nil, 0, err
+	}
+	return restaurants, total, nil
+}
+
+// GetRestaurant 根据 ID 获取餐厅详情
+func (r *FoodRepository) GetRestaurant(id uint) (*model.Restaurant, error) {
+	var restaurant model.Restaurant
+	if err := r.db.First(&restaurant, id).Error; err != nil {
+		return nil, err
+	}
+	return &restaurant, nil
+}
+
+// ListFeaturedRestaurants 获取推荐餐厅（按销量）
+func (r *FoodRepository) ListFeaturedRestaurants(limit int) ([]model.Restaurant, error) {
+	var restaurants []model.Restaurant
+	if err := r.db.Where("status = 1").Order("sales DESC").Limit(limit).Find(&restaurants).Error; err != nil {
+		return nil, err
+	}
+	return restaurants, nil
+}
+
+// ListMenuCategories 获取餐厅的菜品分类
+func (r *FoodRepository) ListMenuCategories(restaurantID uint) ([]model.MenuCategory, error) {
+	var categories []model.MenuCategory
+	if err := r.db.Where("restaurant_id = ?", restaurantID).Order("sort ASC, id ASC").Find(&categories).Error; err != nil {
+		return nil, err
+	}
+	return categories, nil
+}
+
+// ListMenuItems 获取餐厅的菜品列表，可按菜品分类过滤
+func (r *FoodRepository) ListMenuItems(restaurantID uint, categoryID uint) ([]model.MenuItem, error) {
+	var items []model.MenuItem
+	query := r.db.Where("restaurant_id = ? AND status = 1", restaurantID)
+	if categoryID > 0 {
+		query = query.Where("category_id = ?", categoryID)
+	}
+	if err := query.Order("sort ASC, id ASC").Find(&items).Error; err != nil {
+		return nil, err
+	}
+	return items, nil
+}