diff --git a/internal/app/api/idl/bilibili_picture.go b/internal/app/api/idl/bilibili_picture.go
index 759713a..990aba9 100644
--- a/internal/app/api/idl/bilibili_picture.go
+++ b/internal/app/api/idl/bilibili_picture.go
@@ -114,7 +114,8 @@ type BilibiliPicturesRecommendResp struct {
 
 type BilibiliPictureRandomResp struct {
 	BilibiliRandomPicture
-	DynamicURL string `json:"dynamic_url"`
+	DynamicURL   string `json:"dynamic_url"`
+	DynamicIDStr string `json:"dynamic_id_str"`
 }
 type BilibiliDynamicDTO struct {
 	DynamicID    uint64                  `json:"dynamic_id"`
diff --git a/internal/app/api/service/bilbil_picture.go b/internal/app/api/service/bilbil_picture.go
index 8f93da8..aa7e857 100644
--- a/internal/app/api/service/bilbil_picture.go
+++ b/internal/app/api/service/bilbil_picture.go
@@ -170,6 +170,7 @@ func (service *BilbilPicture) Random(ctx context.Context) (*idl.BilibiliPictureR
 				resp := &idl.BilibiliPictureRandomResp{}
 				resp.BilibiliRandomPicture = pictures[idx]
 				resp.DynamicURL = fmt.Sprintf(DynamicURL, pictures[idx].DynamicID)
+				resp.DynamicIDStr = fmt.Sprintf("%d", pictures[idx].DynamicID)
 				return resp, nil
 			}
 		}
@@ -211,6 +212,7 @@ func (service *BilbilPicture) Random(ctx context.Context) (*idl.BilibiliPictureR
 	resp := &idl.BilibiliPictureRandomResp{}
 	resp.BilibiliRandomPicture = pictures[idx]
 	resp.DynamicURL = fmt.Sprintf(DynamicURL, pictures[idx].DynamicID)
+	resp.DynamicIDStr = fmt.Sprintf("%d", pictures[idx].DynamicID)
 	return resp, nil
 }