diff --git a/service/cleaner.go b/service/cleaner.go
index 8305136..75f8856 100644
--- a/service/cleaner.go
+++ b/service/cleaner.go
@@ -45,7 +45,6 @@ func (c *cleaner) runOnce(ctx context.Context) {
 		g.Log().Errorf(ctx, "[cleaner] list expired(downloaded) error: %v", err)
 	} else {
 		for _, t := range expired {
-			_ = Storage.DeleteByTask(ctx, t)
 			_ = dao.Task.HardDeleteByIDGlobal(ctx, t.Id)
 		}
 		g.Log().Infof(ctx, "[cleaner] expired(downloaded) cleaned, count=%d", len(expired))
@@ -77,13 +76,12 @@ func (c *cleaner) runOnce(ctx context.Context) {
 		g.Log().Infof(ctx, "[cleaner] failed retryable cleaned, count=%d", len(retryable))
 	}
 
-	// 4) 超过重试次数仍失败(state=3)的任务：硬删除 + OSS
+	// 4) 超过重试次数仍失败(state=3)的任务：硬删除
 	exhausted, err := dao.Task.ListFailedExhaustedGlobal(ctx, 200)
 	if err != nil {
 		g.Log().Errorf(ctx, "[cleaner] list failed exhausted error: %v", err)
 	} else {
 		for _, t := range exhausted {
-			_ = Storage.DeleteByTask(ctx, t)
 			_ = dao.Task.HardDeleteByIDGlobal(ctx, t.Id)
 		}
 		g.Log().Infof(ctx, "[cleaner] failed exhausted cleaned, count=%d", len(exhausted))
diff --git a/service/storage.go b/service/storage.go
index 39ec846..920071f 100644
--- a/service/storage.go
+++ b/service/storage.go
@@ -10,7 +10,6 @@ import (
 // StorageService 结果存储（OSS/MinIO）抽象
 type StorageService interface {
 	UploadByTask(ctx context.Context, t *entity.AsynchTask, data []byte, fileExt string, contentType string) (ossURL string, err error)
-	DeleteByTask(ctx context.Context, t *entity.AsynchTask) error
 }
 
 // Storage 默认存储实现（优先对接你们的 oss 文件服务；必要时也可以切到 MinIO）
diff --git a/service/storage_oss.go b/service/storage_oss.go
index f9977ad..6d16a49 100644
--- a/service/storage_oss.go
+++ b/service/storage_oss.go
@@ -68,13 +68,6 @@ func (s *ossStorage) UploadByTask(ctx context.Context, _ *entity.AsynchTask, dat
 	return resp.FileURL, nil
 }
 
-func (s *ossStorage) DeleteByTask(ctx context.Context, t *entity.AsynchTask) error {
-	// 你说当前 oss 暂时没有删除接口：这里保留方法占位，后续补接口时直接实现
-	_ = ctx
-	_ = t
-	return nil
-}
-
 // setTaskHeadersToCtx 把任务入库时保存的 header 信息注入 ctx，给 worker 调 OSS 用
 func setTaskHeadersToCtx(ctx context.Context, headers map[string]string) context.Context {
 	if headers == nil {