diff --git a/backend/internal/controllers/download.go b/backend/internal/controllers/download.go
index 864f936..5171d40 100644
--- a/backend/internal/controllers/download.go
+++ b/backend/internal/controllers/download.go
@@ -125,17 +125,10 @@ func VaildateShare(c *echo.Context) error {
 
 	// 统计分享数
 	currentDate := time.Now().Format("2006-01-02")
-	statData, _ := models.GetRedisStat(currentDate)
-	if statData == nil {
-		statData = &models.StatData{
-			FileSize:    0,
-			FileNum:     0,
-			ShareNum:    0,
-			DownloadNum: 0,
-		}
-	}
-	statData.DownloadNum += 1
-	err = models.SetRedisStat(currentDate, *statData)
+	err = models.SetRedisStat(currentDate, func(stat *models.StatData) *models.StatData {
+		stat.DownloadNum += 1
+		return stat
+	})
 	if err != nil {
 		return utils.HTTPErrorHandler(c, err)
 	}
diff --git a/backend/internal/controllers/file.go b/backend/internal/controllers/file.go
index b911168..9facf2f 100644
--- a/backend/internal/controllers/file.go
+++ b/backend/internal/controllers/file.go
@@ -241,18 +241,11 @@ func FinishUploadTask(c *echo.Context) error {
 	}
 	// 统计
 	currentDate := time.Now().Format("2006-01-02")
-	statData, _ := models.GetRedisStat(currentDate)
-	if statData == nil {
-		statData = &models.StatData{
-			FileSize:    0,
-			FileNum:     0,
-			ShareNum:    0,
-			DownloadNum: 0,
-		}
-	}
-	statData.FileSize += fileInfo.FileSize
-	statData.FileNum += 1
-	err = models.SetRedisStat(currentDate, *statData)
+	err = models.SetRedisStat(currentDate, func(stat *models.StatData) *models.StatData {
+		stat.FileSize += fileInfo.FileSize
+		stat.FileNum += 1
+		return stat
+	})
 	if err != nil {
 		return utils.HTTPErrorHandler(c, err)
 	}
diff --git a/backend/internal/controllers/share.go b/backend/internal/controllers/share.go
index ab89a97..010e07a 100644
--- a/backend/internal/controllers/share.go
+++ b/backend/internal/controllers/share.go
@@ -128,17 +128,10 @@ func CreateShareInfo(c *echo.Context) error {
 
 	// 统计分享数
 	currentDate := time.Now().Format("2006-01-02")
-	statData, _ := models.GetRedisStat(currentDate)
-	if statData == nil {
-		statData = &models.StatData{
-			FileSize:    0,
-			FileNum:     0,
-			ShareNum:    0,
-			DownloadNum: 0,
-		}
-	}
-	statData.ShareNum += 1
-	err = models.SetRedisStat(currentDate, *statData)
+	err = models.SetRedisStat(currentDate, func(stat *models.StatData) *models.StatData {
+		stat.ShareNum += 1
+		return stat
+	})
 	if err != nil {
 		return utils.HTTPErrorHandler(c, err)
 	}
diff --git a/pkg/models/stat.go b/pkg/models/stat.go
index 2a7d096..263aaa7 100644
--- a/pkg/models/stat.go
+++ b/pkg/models/stat.go
@@ -5,7 +5,6 @@ import (
 
 	"pkg/utils"
 
-	"dario.cat/mergo"
 	"github.com/redis/go-redis/v9"
 )
 
@@ -33,15 +32,21 @@ func GetRedisStat(key string) (*StatData, error) {
 	return &stat, nil
 }
 
-func SetRedisStat(key string, stat StatData) error {
+func SetRedisStat(key string, handler func(stat *StatData) *StatData) error {
 	rdb, ctx := utils.GetRedisClient()
 	old_stat, err := GetRedisStat(key)
 	if err != nil {
 		return err
 	}
-	if old_stat != nil {
-		mergo.Merge(&stat, old_stat)
+	if old_stat == nil {
+		old_stat = &StatData{
+			FileSize:    0,
+			FileNum:     0,
+			ShareNum:    0,
+			DownloadNum: 0,
+		}
 	}
+	stat := handler(old_stat)
 	jsonData, _ := json.Marshal(stat)
 	_, err = rdb.HSet(ctx, "015:stat", key, string(jsonData)).Result()
 	return err