diff --git a/backend/init/log/log.go b/backend/init/log/log.go
index 132a89070..38164f1a8 100644
--- a/backend/init/log/log.go
+++ b/backend/init/log/log.go
@@ -16,6 +16,7 @@ import (
 
 const (
 	TimeFormat         = "2006-01-02 15:04:05"
+	FileTImeFormat     = "2006-01-02-15-04-05"
 	RollingTimePattern = "0 0  * * *"
 )
 
@@ -31,9 +32,10 @@ func setOutput(logger *logrus.Logger, config configs.LogConfig) {
 	writer, err := log.NewWriterFromConfig(&log.Config{
 		LogPath:            config.Path,
 		FileName:           config.LogName,
-		TimeTagFormat:      TimeFormat,
+		TimeTagFormat:      FileTImeFormat,
 		MaxRemain:          config.LogBackup,
 		RollingTimePattern: RollingTimePattern,
+		LogSuffix:          config.LogSuffix,
 	})
 	if err != nil {
 		panic(err)
diff --git a/backend/log/config.go b/backend/log/config.go
index 438840bb2..08c1d6173 100644
--- a/backend/log/config.go
+++ b/backend/log/config.go
@@ -20,6 +20,7 @@ type Config struct {
 	TimeTagFormat      string
 	LogPath            string
 	FileName           string
+	LogSuffix          string
 	MaxRemain          int
 	RollingTimePattern string
 }
@@ -35,6 +36,6 @@ type RollingWriter interface {
 }
 
 func FilePath(c *Config) (filepath string) {
-	filepath = path.Join(c.LogPath, c.FileName) + ".log"
+	filepath = path.Join(c.LogPath, c.FileName) + c.LogSuffix
 	return
 }
diff --git a/backend/log/manager.go b/backend/log/manager.go
index e451084d4..c24f3a991 100644
--- a/backend/log/manager.go
+++ b/backend/log/manager.go
@@ -47,7 +47,7 @@ func NewManager(c *Config) (Manager, error) {
 
 func (m *manager) GenLogFileName(c *Config) (filename string) {
 	m.lock.Lock()
-	filename = path.Join(c.LogPath, c.FileName+"-"+m.startAt.Format(c.TimeTagFormat)) + ".log"
+	filename = path.Join(c.LogPath, c.FileName+"-"+m.startAt.Format(c.TimeTagFormat)) + c.LogSuffix
 	m.startAt = time.Now()
 	m.lock.Unlock()
 	return
diff --git a/backend/log/writer.go b/backend/log/writer.go
index 87473dd6b..698482c38 100644
--- a/backend/log/writer.go
+++ b/backend/log/writer.go
@@ -119,11 +119,13 @@ func NewWriterFromConfig(c *Config) (RollingWriter, error) {
 				continue
 			}
 
-			fileName := c.FileName + ".log."
-			if strings.Contains(fi.Name(), fileName) {
-				fileSuffix := path.Ext(fi.Name())
-				if len(fileSuffix) > 1 {
-					_, err := time.Parse(c.TimeTagFormat, fileSuffix[1:])
+			fileName := c.FileName
+			if strings.Contains(fi.Name(), fileName) && strings.Contains(fi.Name(), c.LogSuffix+".tar.gz") {
+				start := strings.Index(fi.Name(), "-")
+				end := strings.Index(fi.Name(), c.LogSuffix)
+				name := fi.Name()
+				if start > 0 && end > 0 {
+					_, err := time.Parse(c.TimeTagFormat, name[start+1:end])
 					if err == nil {
 						files = append(files, fi.Name())
 					}
@@ -131,10 +133,12 @@ func NewWriterFromConfig(c *Config) (RollingWriter, error) {
 			}
 		}
 		sort.Slice(files, func(i, j int) bool {
-			fileSuffix1 := path.Ext(files[i])
-			fileSuffix2 := path.Ext(files[j])
-			t1, _ := time.Parse(c.TimeTagFormat, fileSuffix1[1:])
-			t2, _ := time.Parse(c.TimeTagFormat, fileSuffix2[1:])
+			t1Start := strings.Index(files[i], "-")
+			t1End := strings.Index(files[i], c.LogSuffix)
+			t2Start := strings.Index(files[i], "-")
+			t2End := strings.Index(files[i], c.LogSuffix)
+			t1, _ := time.Parse(c.TimeTagFormat, files[i][t1Start+1:t1End])
+			t2, _ := time.Parse(c.TimeTagFormat, files[j][t2Start+1:t2End])
 			return t1.Before(t2)
 		})