diff --git a/controllers/companies_controller.go b/controllers/companies_controller.go
index 0d6ef0d..edc5254 100644
--- a/controllers/companies_controller.go
+++ b/controllers/companies_controller.go
@@ -4,6 +4,7 @@ import (
 	"net/http"
 	"net/url"
 	"strconv"
+	"time"
 
 	"github.com/gin-gonic/gin"
 
@@ -47,11 +48,22 @@ func (c *CompaniesController) FindAll(ctx *gin.Context) {
 	}
 
 	items := make([]gin.H, 0, len(companies))
+	now := time.Now()
 	for _, company := range companies {
+		serialCount := len(company.Serials)
+		activeCount := 0
+		for _, serial := range company.Serials {
+			if serial.IsActive && (serial.ValidUntil == nil || serial.ValidUntil.After(now)) {
+				activeCount++
+			}
+		}
+
 		items = append(items, gin.H{
 			"companyName":  company.CompanyName,
 			"firstCreated": company.CreatedAt,
 			"lastCreated":  company.UpdatedAt,
+			"serialCount":  serialCount,
+			"activeCount":  activeCount,
 			"status": map[bool]string{
 				true:  "active",
 				false: "disabled",
@@ -99,7 +111,10 @@ func (c *CompaniesController) FindOne(ctx *gin.Context) {
 		return
 	}
 
-	SuccessResponse(ctx, "获取企业详情成功", data)
+	ctx.JSON(http.StatusOK, gin.H{
+		"message": "获取企业详情成功",
+		"data":    data,
+	})
 }
 
 // Create 创建企业
@@ -298,5 +313,8 @@ func (c *CompaniesController) StatsOverview(ctx *gin.Context) {
 		return
 	}
 
-	SuccessResponse(ctx, "获取统计数据成功", stats)
+	ctx.JSON(http.StatusOK, gin.H{
+		"message": "获取统计数据成功",
+		"data":    stats,
+	})
 }
diff --git a/models/models.go b/models/models.go
index b4266a0..e2de948 100644
--- a/models/models.go
+++ b/models/models.go
@@ -33,17 +33,17 @@ type Company struct {
 
 // Serial 模型
 type Serial struct {
-	ID           uint   `gorm:"primaryKey"`
-	SerialNumber string `gorm:"uniqueIndex;size:255"`
-	CompanyName  string `gorm:"index;size:255"`
-	ValidUntil   *time.Time
-	IsActive     bool `gorm:"default:true"`
-	CreatedBy    *uint
-	CreatedAt    time.Time
-	UpdatedAt    time.Time
-	DeletedAt    gorm.DeletedAt `gorm:"index"`
-	User         *User          `gorm:"foreignKey:CreatedBy"`
-	Company      *Company       `gorm:"foreignKey:CompanyName;references:CompanyName"`
+	ID           uint           `gorm:"primaryKey" json:"id"`
+	SerialNumber string         `gorm:"uniqueIndex;size:255" json:"serialNumber"`
+	CompanyName  string         `gorm:"index;size:255" json:"companyName"`
+	ValidUntil   *time.Time     `json:"validUntil"`
+	IsActive     bool           `gorm:"default:true" json:"isActive"`
+	CreatedBy    *uint          `json:"createdBy"`
+	CreatedAt    time.Time      `json:"createdAt"`
+	UpdatedAt    time.Time      `json:"updatedAt"`
+	DeletedAt    gorm.DeletedAt `gorm:"index" json:"-"`
+	User         *User          `gorm:"foreignKey:CreatedBy" json:"user,omitempty"`
+	Company      *Company       `gorm:"foreignKey:CompanyName;references:CompanyName" json:"company,omitempty"`
 }
 
 // UserDTO 数据传输对象
diff --git a/services/companies_service.go b/services/companies_service.go
index 3f58c70..a16d7f6 100644
--- a/services/companies_service.go
+++ b/services/companies_service.go
@@ -37,7 +37,7 @@ func (s *CompaniesService) FindAll(page int, limit int, search string) ([]models
 		return nil, 0, 0, errors.New("查询企业总数失败")
 	}
 
-	result := db.Order("updated_at DESC").Offset(offset).Limit(limit).Find(&companies)
+	result := db.Preload("Serials").Order("updated_at DESC").Offset(offset).Limit(limit).Find(&companies)
 	if result.Error != nil {
 		return nil, 0, 0, errors.New("查询企业列表失败")
 	}