diff --git a/bootstrap/conf.go b/bootstrap/conf.go
index cdea548b..88094a8e 100644
--- a/bootstrap/conf.go
+++ b/bootstrap/conf.go
@@ -10,10 +10,6 @@ import (
 
 // InitConf init config
 func InitConf() {
-	err := os.MkdirAll("data/temp", 0700)
-	if err != nil {
-		log.Fatalf("create temp dir error: %s", err.Error())
-	}
 	log.Infof("reading config file: %s", conf.ConfigFile)
 	if !utils.Exists(conf.ConfigFile) {
 		log.Infof("config file not exists, creating default config file")
@@ -25,25 +21,29 @@ func InitConf() {
 		if !utils.WriteToJson(conf.ConfigFile, conf.Conf) {
 			log.Fatalf("failed to create default config file")
 		}
-		return
+	} else {
+		config, err := ioutil.ReadFile(conf.ConfigFile)
+		if err != nil {
+			log.Fatalf("reading config file error:%s", err.Error())
+		}
+		conf.Conf = new(conf.Config)
+		err = utils.Json.Unmarshal(config, conf.Conf)
+		if err != nil {
+			log.Fatalf("load config error: %s", err.Error())
+		}
+		log.Debugf("config:%+v", conf.Conf)
+		// update config.json struct
+		confBody, err := utils.Json.MarshalIndent(conf.Conf, "", "  ")
+		if err != nil {
+			log.Fatalf("marshal config error:%s", err.Error())
+		}
+		err = ioutil.WriteFile(conf.ConfigFile, confBody, 0777)
+		if err != nil {
+			log.Fatalf("update config struct error: %s", err.Error())
+		}
 	}
-	config, err := ioutil.ReadFile(conf.ConfigFile)
+	err := os.MkdirAll(conf.Conf.TempDir, 0700)
 	if err != nil {
-		log.Fatalf("reading config file error:%s", err.Error())
-	}
-	conf.Conf = new(conf.Config)
-	err = utils.Json.Unmarshal(config, conf.Conf)
-	if err != nil {
-		log.Fatalf("load config error: %s", err.Error())
-	}
-	log.Debugf("config:%+v", conf.Conf)
-	// update config.json struct
-	confBody, err := utils.Json.MarshalIndent(conf.Conf, "", "  ")
-	if err != nil {
-		log.Fatalf("marshal config error:%s", err.Error())
-	}
-	err = ioutil.WriteFile(conf.ConfigFile, confBody, 0777)
-	if err != nil {
-		log.Fatalf("update config struct error: %s", err.Error())
+		log.Fatalf("create temp dir error: %s", err.Error())
 	}
 }
diff --git a/conf/config.go b/conf/config.go
index 78bb1e06..6910937a 100644
--- a/conf/config.go
+++ b/conf/config.go
@@ -30,6 +30,7 @@ type Config struct {
 	Database Database    `json:"database"`
 	Scheme   Scheme      `json:"scheme"`
 	Cache    CacheConfig `json:"cache"`
+	TempDir  string      `json:"temp_dir"`
 }
 
 func DefaultConfig() *Config {
@@ -37,6 +38,7 @@ func DefaultConfig() *Config {
 		Address: "0.0.0.0",
 		Port:    5244,
 		Assets:  "jsdelivr",
+		TempDir: "data/temp",
 		Database: Database{
 			Type:        "sqlite3",
 			Port:        0,