diff --git a/api/core/types/oss.go b/api/core/types/oss.go
index bacfdad8..596ec3df 100644
--- a/api/core/types/oss.go
+++ b/api/core/types/oss.go
@@ -12,6 +12,7 @@ type MiniOssConfig struct {
 	AccessKey    string
 	AccessSecret string
 	Bucket       string
+	SubDir       string
 	UseSSL       bool
 	Domain       string
 }
@@ -21,6 +22,7 @@ type QiNiuOssConfig struct {
 	AccessKey    string
 	AccessSecret string
 	Bucket       string
+	SubDir       string
 	Domain       string
 }
 
@@ -29,6 +31,7 @@ type AliYunOssConfig struct {
 	AccessKey    string
 	AccessSecret string
 	Bucket       string
+	SubDir       string
 	Domain       string
 }
 
diff --git a/api/service/oss/aliyun_oss.go b/api/service/oss/aliyun_oss.go
index b917cc5f..a44b3547 100644
--- a/api/service/oss/aliyun_oss.go
+++ b/api/service/oss/aliyun_oss.go
@@ -32,6 +32,10 @@ func NewAliYunOss(appConfig *types.AppConfig) (*AliYunOss, error) {
 		return nil, err
 	}
 
+	if config.SubDir == "" {
+		config.SubDir = "gpt"
+	}
+
 	return &AliYunOss{
 		config:   config,
 		bucket:   bucket,
@@ -54,7 +58,7 @@ func (s AliYunOss) PutFile(ctx *gin.Context, name string) (string, error) {
 	defer src.Close()
 
 	fileExt := filepath.Ext(file.Filename)
-	objectKey := fmt.Sprintf("%d%s", time.Now().UnixMicro(), fileExt)
+	objectKey := fmt.Sprintf("%s/%d%s", s.config.SubDir, time.Now().UnixMicro(), fileExt)
 	// 上传文件
 	err = s.bucket.PutObject(objectKey, src)
 	if err != nil {
@@ -80,7 +84,7 @@ func (s AliYunOss) PutImg(imageURL string, useProxy bool) (string, error) {
 		return "", fmt.Errorf("error with parse image URL: %v", err)
 	}
 	fileExt := filepath.Ext(parse.Path)
-	objectKey := fmt.Sprintf("%d%s", time.Now().UnixMicro(), fileExt)
+	objectKey := fmt.Sprintf("%s/%d%s", s.config.SubDir, time.Now().UnixMicro(), fileExt)
 	// 上传文件字节数据
 	err = s.bucket.PutObject(objectKey, bytes.NewReader(imageData))
 	if err != nil {
@@ -91,7 +95,8 @@ func (s AliYunOss) PutImg(imageURL string, useProxy bool) (string, error) {
 
 func (s AliYunOss) Delete(fileURL string) error {
 	objectName := filepath.Base(fileURL)
-	return s.bucket.DeleteObject(objectName)
+	key := fmt.Sprintf("%s/%s", s.config.SubDir, objectName)
+	return s.bucket.DeleteObject(key)
 }
 
 var _ Uploader = AliYunOss{}
diff --git a/api/service/oss/minio_oss.go b/api/service/oss/minio_oss.go
index edeaf4a7..fcd34c27 100644
--- a/api/service/oss/minio_oss.go
+++ b/api/service/oss/minio_oss.go
@@ -29,6 +29,9 @@ func NewMiniOss(appConfig *types.AppConfig) (MiniOss, error) {
 	if err != nil {
 		return MiniOss{}, err
 	}
+	if config.SubDir == "" {
+		config.SubDir = "gpt"
+	}
 	return MiniOss{config: config, client: minioClient, proxyURL: appConfig.ProxyURL}, nil
 }
 
@@ -48,7 +51,7 @@ func (s MiniOss) PutImg(imageURL string, useProxy bool) (string, error) {
 		return "", fmt.Errorf("error with parse image URL: %v", err)
 	}
 	fileExt := filepath.Ext(parse.Path)
-	filename := fmt.Sprintf("%d%s", time.Now().UnixMicro(), fileExt)
+	filename := fmt.Sprintf("%s/%d%s", s.config.SubDir, time.Now().UnixMicro(), fileExt)
 	info, err := s.client.PutObject(
 		context.Background(),
 		s.config.Bucket,
@@ -75,7 +78,7 @@ func (s MiniOss) PutFile(ctx *gin.Context, name string) (string, error) {
 	defer fileReader.Close()
 
 	fileExt := filepath.Ext(file.Filename)
-	filename := fmt.Sprintf("%d%s", time.Now().UnixMicro(), fileExt)
+	filename := fmt.Sprintf("%s/%d%s", s.config.SubDir, time.Now().UnixMicro(), fileExt)
 	info, err := s.client.PutObject(ctx, s.config.Bucket, filename, fileReader, file.Size, minio.PutObjectOptions{
 		ContentType: file.Header.Get("Content-Type"),
 	})
@@ -88,7 +91,8 @@ func (s MiniOss) PutFile(ctx *gin.Context, name string) (string, error) {
 
 func (s MiniOss) Delete(fileURL string) error {
 	objectName := filepath.Base(fileURL)
-	return s.client.RemoveObject(context.Background(), s.config.Bucket, objectName, minio.RemoveObjectOptions{})
+	key := fmt.Sprintf("%s/%s", s.config.SubDir, objectName)
+	return s.client.RemoveObject(context.Background(), s.config.Bucket, key, minio.RemoveObjectOptions{})
 }
 
 var _ Uploader = MiniOss{}
diff --git a/api/service/oss/qiniu_oss.go b/api/service/oss/qiniu_oss.go
index fbdb229c..dd605aec 100644
--- a/api/service/oss/qiniu_oss.go
+++ b/api/service/oss/qiniu_oss.go
@@ -21,7 +21,6 @@ type QinNiuOss struct {
 	uploader  *storage.FormUploader
 	manager   *storage.BucketManager
 	proxyURL  string
-	dir       string
 }
 
 func NewQiNiuOss(appConfig *types.AppConfig) QinNiuOss {
@@ -38,6 +37,9 @@ func NewQiNiuOss(appConfig *types.AppConfig) QinNiuOss {
 	putPolicy := storage.PutPolicy{
 		Scope: config.Bucket,
 	}
+	if config.SubDir == "" {
+		config.SubDir = "gpt"
+	}
 	return QinNiuOss{
 		config:    config,
 		mac:       mac,
@@ -45,7 +47,6 @@ func NewQiNiuOss(appConfig *types.AppConfig) QinNiuOss {
 		uploader:  formUploader,
 		manager:   storage.NewBucketManager(mac, &storeConfig),
 		proxyURL:  appConfig.ProxyURL,
-		dir:       "chatgpt-plus",
 	}
 }
 
@@ -63,7 +64,7 @@ func (s QinNiuOss) PutFile(ctx *gin.Context, name string) (string, error) {
 	defer src.Close()
 
 	fileExt := filepath.Ext(file.Filename)
-	key := fmt.Sprintf("%s/%d%s", s.dir, time.Now().UnixMicro(), fileExt)
+	key := fmt.Sprintf("%s/%d%s", s.config.SubDir, time.Now().UnixMicro(), fileExt)
 	// 上传文件
 	ret := storage.PutRet{}
 	extra := storage.PutExtra{}
@@ -91,7 +92,7 @@ func (s QinNiuOss) PutImg(imageURL string, useProxy bool) (string, error) {
 		return "", fmt.Errorf("error with parse image URL: %v", err)
 	}
 	fileExt := filepath.Ext(parse.Path)
-	key := fmt.Sprintf("%s/%d%s", s.dir, time.Now().UnixMicro(), fileExt)
+	key := fmt.Sprintf("%s/%d%s", s.config.SubDir, time.Now().UnixMicro(), fileExt)
 	ret := storage.PutRet{}
 	extra := storage.PutExtra{}
 	// 上传文件字节数据
@@ -104,7 +105,7 @@ func (s QinNiuOss) PutImg(imageURL string, useProxy bool) (string, error) {
 
 func (s QinNiuOss) Delete(fileURL string) error {
 	objectName := filepath.Base(fileURL)
-	key := fmt.Sprintf("%s/%s", s.dir, objectName)
+	key := fmt.Sprintf("%s/%s", s.config.SubDir, objectName)
 	return s.manager.Delete(s.config.Bucket, key)
 }