diff --git a/app/admin/apis/basic/category.go b/app/admin/apis/basic/category.go
new file mode 100644
index 0000000..ed89b67
--- /dev/null
+++ b/app/admin/apis/basic/category.go
@@ -0,0 +1,55 @@
+package basic
+
+import (
+	"github.com/gin-gonic/gin"
+	"go-admin/app/admin/middleware"
+	"go-admin/app/admin/models"
+	orm "go-admin/common/global"
+	"go-admin/logger"
+	"go-admin/tools"
+	"go-admin/tools/app"
+)
+
+type CreateCategoryRequest struct {
+	Name     string `json:"name" validate:"required"` //名称
+	ParentId string `json:"parent_id"`                //父分类编号
+}
+
+// CreateCategory 创建分类
+// @Summary 创建分类
+// @Tags 商品分类
+// @Produce json
+// @Accept json
+// @Param request body CreateCategoryRequest true "商品分类创建模型"
+// @Success 200 {object} app.Response
+// @Router /api/v1/category/create [post]
+func CreateCategory(c *gin.Context) {
+	var req = new(CreateCategoryRequest)
+
+	if err := c.ShouldBindJSON(req); err != nil {
+		app.Error(c, 400, err, err.Error())
+		return
+	}
+
+	err := tools.Validate(req)
+	if err != nil {
+		app.Error(c, 400, err, err.Error())
+		return
+	}
+
+	category := models.Category{
+		Name:                  req.Name,
+		Display:               1,
+		Pid:                   req.ParentId,
+		CooperativeBusinessId: middleware.GetCooperativeBusinessId(c),
+	}
+
+	err = orm.Eloquent.Model(category).Create(category).Error
+	if err != nil {
+		logger.Error("创建分类失败", logger.Field("category", category), logger.Field("err", err))
+		app.Error(c, 500, err, "创建分类失败")
+		return
+	}
+
+	app.OK(c, nil, "ok")
+}
diff --git a/app/admin/models/category.go b/app/admin/models/category.go
new file mode 100644
index 0000000..37e2ede
--- /dev/null
+++ b/app/admin/models/category.go
@@ -0,0 +1,57 @@
+package models
+
+import (
+	"fmt"
+	"go-admin/app/admin/models/common"
+	"gorm.io/gorm"
+)
+
+type Category struct {
+	Model
+
+	Name                  string `json:"name"`                    // 分类名称
+	Number                string `json:"number"`                  //编号
+	Display               int8   `json:"state"`                   // 1 展示 0 隐藏
+	Pid                   string `json:"pid" gorm:"index"`        //父分类的编号
+	CooperativeBusinessId uint32 `json:"cooperative_business_id"` //合作商id
+}
+
+func (c *Category) TableName() string {
+	return "erp_category"
+}
+
+func (c *Category) BeforeCreate(tx *gorm.DB) error {
+	if c.Number == "" {
+		var count int64
+		var err error
+		if c.Pid == "" {
+			err = tx.Model(c).
+				Scopes(common.ScopeCooperativeBusiness(c.CooperativeBusinessId)).
+				Where("pid", "").
+				Count(&count).Error
+			if err != nil {
+				return err
+			}
+			c.Number = fmt.Sprintf("%03d", count)
+		} else {
+			var parent Category
+			err = tx.
+				Scopes(common.ScopeCooperativeBusiness(c.CooperativeBusinessId)).
+				Where("number", c.Pid).
+				First(&parent).Error
+			if err != nil {
+				return err
+			}
+			err = tx.Model(c).
+				Scopes(common.ScopeCooperativeBusiness(c.CooperativeBusinessId)).
+				Where("pid", c.Pid).
+				Count(&count).
+				Error
+			if err != nil {
+				return err
+			}
+			c.Number = fmt.Sprintf("%s%03d", parent.Number, count)
+		}
+	}
+	return nil
+}
diff --git a/app/admin/models/common/scope.go b/app/admin/models/common/scope.go
new file mode 100644
index 0000000..ec6a2af
--- /dev/null
+++ b/app/admin/models/common/scope.go
@@ -0,0 +1,9 @@
+package common
+
+import "gorm.io/gorm"
+
+func ScopeCooperativeBusiness(id uint32) func(db *gorm.DB) *gorm.DB {
+	return func(db *gorm.DB) *gorm.DB {
+		return db.Where("cooperative_business_id = ?", id)
+	}
+}
diff --git a/app/admin/models/supplier.go b/app/admin/models/supplier.go
index a1b28c0..9b0dc6e 100644
--- a/app/admin/models/supplier.go
+++ b/app/admin/models/supplier.go
@@ -2,6 +2,7 @@ package models
 
 import (
 	"fmt"
+	"go-admin/app/admin/models/common"
 	orm "go-admin/common/global"
 	"go-admin/logger"
 	"gorm.io/gorm"
@@ -35,13 +36,16 @@ func (s *Supplier) TableName() string {
 
 func (s *Supplier) BeforeCreate(tx *gorm.DB) error {
 	if s.Number == "" {
-		var partnerCount int64
-		err := tx.Table(s.TableName()).Unscoped().Count(&partnerCount).Error
+		var count int64
+		err := tx.Table(s.TableName()).
+			Unscoped().
+			Scopes(common.ScopeCooperativeBusiness(s.CooperativeBusinessId)).
+			Count(&count).Error
 		if err != nil {
 			logger.Error("get supplier count failed", logger.Field("err", err), logger.Field("s", s))
 			return err
 		}
-		s.Number = fmt.Sprintf("%03d", partnerCount)
+		s.Number = fmt.Sprintf("%03d", count)
 	}
 	return nil
 }
@@ -63,7 +67,7 @@ func GetSupplier(req GetSupplierRequest) ([]*Supplier, error) {
 		m = m.Where("number = ?", req.Number)
 	}
 
-	m = m.Where("cooperative_business_id = ?", req.CooperativeBusinessId)
+	m = m.Scopes(common.ScopeCooperativeBusiness(req.CooperativeBusinessId))
 
 	err := m.
 		Order("created_at desc").