diff --git a/internal/model/dto/shop_dto.go b/internal/model/dto/shop_dto.go
index 2a849df..39052af 100644
--- a/internal/model/dto/shop_dto.go
+++ b/internal/model/dto/shop_dto.go
@@ -11,18 +11,19 @@ type ShopListRequest struct {
 }
 
 type CreateShopRequest struct {
-	ShopName     string `json:"shop_name" validate:"required,min=1,max=100" required:"true" minLength:"1" maxLength:"100" description:"店铺名称"`
-	ShopCode     string `json:"shop_code" validate:"required,min=1,max=50" required:"true" minLength:"1" maxLength:"50" description:"店铺编号"`
-	ParentID     *uint  `json:"parent_id" validate:"omitempty,min=1" minimum:"1" description:"上级店铺ID（一级店铺可不填）"`
-	ContactName  string `json:"contact_name" validate:"omitempty,max=50" maxLength:"50" description:"联系人姓名"`
-	ContactPhone string `json:"contact_phone" validate:"omitempty,len=11" minLength:"11" maxLength:"11" description:"联系人电话"`
-	Province     string `json:"province" validate:"omitempty,max=50" maxLength:"50" description:"省份"`
-	City         string `json:"city" validate:"omitempty,max=50" maxLength:"50" description:"城市"`
-	District     string `json:"district" validate:"omitempty,max=50" maxLength:"50" description:"区县"`
-	Address      string `json:"address" validate:"omitempty,max=255" maxLength:"255" description:"详细地址"`
-	InitPassword string `json:"init_password" validate:"required,min=8,max=32" required:"true" minLength:"8" maxLength:"32" description:"初始账号密码"`
-	InitUsername string `json:"init_username" validate:"required,min=3,max=50" required:"true" minLength:"3" maxLength:"50" description:"初始账号用户名"`
-	InitPhone    string `json:"init_phone" validate:"required,len=11" required:"true" minLength:"11" maxLength:"11" description:"初始账号手机号"`
+	ShopName      string `json:"shop_name" validate:"required,min=1,max=100" required:"true" minLength:"1" maxLength:"100" description:"店铺名称"`
+	ShopCode      string `json:"shop_code" validate:"required,min=1,max=50" required:"true" minLength:"1" maxLength:"50" description:"店铺编号"`
+	ParentID      *uint  `json:"parent_id" validate:"omitempty,min=1" minimum:"1" description:"上级店铺ID（一级店铺可不填）"`
+	ContactName   string `json:"contact_name" validate:"omitempty,max=50" maxLength:"50" description:"联系人姓名"`
+	ContactPhone  string `json:"contact_phone" validate:"omitempty,len=11" minLength:"11" maxLength:"11" description:"联系人电话"`
+	Province      string `json:"province" validate:"omitempty,max=50" maxLength:"50" description:"省份"`
+	City          string `json:"city" validate:"omitempty,max=50" maxLength:"50" description:"城市"`
+	District      string `json:"district" validate:"omitempty,max=50" maxLength:"50" description:"区县"`
+	Address       string `json:"address" validate:"omitempty,max=255" maxLength:"255" description:"详细地址"`
+	DefaultRoleID uint   `json:"default_role_id" validate:"required,min=1" required:"true" minimum:"1" description:"店铺默认角色ID（必须是客户角色）"`
+	InitPassword  string `json:"init_password" validate:"required,min=8,max=32" required:"true" minLength:"8" maxLength:"32" description:"初始账号密码"`
+	InitUsername  string `json:"init_username" validate:"required,min=3,max=50" required:"true" minLength:"3" maxLength:"50" description:"初始账号用户名"`
+	InitPhone     string `json:"init_phone" validate:"required,len=11" required:"true" minLength:"11" maxLength:"11" description:"初始账号手机号"`
 }
 
 type UpdateShopRequest struct {
diff --git a/internal/service/shop/service.go b/internal/service/shop/service.go
index 0cccf17..37a097c 100644
--- a/internal/service/shop/service.go
+++ b/internal/service/shop/service.go
@@ -68,6 +68,18 @@ func (s *Service) Create(ctx context.Context, req *dto.CreateShopRequest) (*dto.
 		return nil, errors.New(errors.CodePhoneExists, "初始账号手机号已存在")
 	}
 
+	// 验证默认角色：必须存在、是客户角色且已启用
+	defaultRole, err := s.roleStore.GetByID(ctx, req.DefaultRoleID)
+	if err != nil {
+		return nil, errors.New(errors.CodeNotFound, "默认角色不存在")
+	}
+	if defaultRole.RoleType != constants.RoleTypeCustomer {
+		return nil, errors.New(errors.CodeInvalidParam, "店铺默认角色必须是客户角色")
+	}
+	if defaultRole.Status != constants.StatusEnabled {
+		return nil, errors.New(errors.CodeInvalidParam, "默认角色已禁用")
+	}
+
 	shop := &model.Shop{
 		ShopName:     req.ShopName,
 		ShopCode:     req.ShopCode,
@@ -108,6 +120,18 @@ func (s *Service) Create(ctx context.Context, req *dto.CreateShopRequest) (*dto.
 		return nil, errors.Wrap(errors.CodeInternalError, err, "创建初始账号失败")
 	}
 
+	// 设置店铺默认角色
+	shopRole := &model.ShopRole{
+		ShopID:  shop.ID,
+		RoleID:  req.DefaultRoleID,
+		Status:  constants.StatusEnabled,
+		Creator: currentUserID,
+		Updater: currentUserID,
+	}
+	if err := s.shopRoleStore.BatchCreate(ctx, []*model.ShopRole{shopRole}); err != nil {
+		return nil, errors.Wrap(errors.CodeInternalError, err, "设置店铺默认角色失败")
+	}
+
 	return &dto.ShopResponse{
 		ID:           shop.ID,
 		ShopName:     shop.ShopName,