diff --git a/scagent/util/fsutil.go b/scagent/util/fsutil.go
index 6c6e9d2..7dc1519 100644
--- a/scagent/util/fsutil.go
+++ b/scagent/util/fsutil.go
@@ -14,7 +14,6 @@ import (
 	"path/filepath"
 	"scagent/config"
 	"strings"
-	"time"
 
 	"github.com/schollz/progressbar/v3"
 	"go.uber.org/zap"
@@ -304,16 +303,6 @@ func DecompressZip(zpFname string, dirpath string) error {
 			return fmt.Errorf("failed to open file in zip (%v)", err)
 		}
 		defer fileInArchive.Close()
-		// 检查文件是否存在，存在的话先备份
-		if _, err := os.Stat(filePath); err == nil {
-			// 当前时间
-			currentTime := time.Now().Format("20060102_150405")
-			// 备份文件
-			backupPath := filePath + currentTime + "_bak"
-			if err := os.Rename(filePath, backupPath); err != nil {
-				return fmt.Errorf("failed to backup file (%v)", err)
-			}
-		}
 		// 复制文件到目标路径
 		if _, err := io.Copy(dstFile, fileInArchive); err != nil {
 			return fmt.Errorf("failed to copy file in zip (%v)", err)