diff --git a/app/services/create_watch_video_service.rb b/app/services/create_watch_video_service.rb
index f2d360638..b110bcc97 100644
--- a/app/services/create_watch_video_service.rb
+++ b/app/services/create_watch_video_service.rb
@@ -28,17 +28,18 @@ class CreateWatchVideoService < ApplicationService
 
           watch_course_video = watch_video_history.watch_course_video
 
-          watch_course_video.total_duration = watch_course_video.watch_video_histories.sum(:total_duration)
-          watch_course_video.end_at = current_time
-          watch_course_video.save!
-
-          if watch_course_video.present? && !watch_course_video.is_finished && watch_course_video.watch_duration < params[:watch_duration].to_f
-            # 更新课程视频的时长及是否看完状态
-            watch_course_video.watch_duration = params[:watch_duration]
-            if params[:ed].present?
-              watch_course_video.is_finished = watch_course_video.watch_video_histories.sum(:total_duration) >= watch_course_video.duration
-            end
+          if watch_course_video.present?
+            watch_course_video.total_duration = watch_course_video.watch_video_histories.sum(:total_duration)
+            watch_course_video.end_at = current_time
             watch_course_video.save!
+            if !watch_course_video.is_finished && watch_course_video.watch_duration < params[:watch_duration].to_f
+              # 更新课程视频的时长及是否看完状态
+              watch_course_video.watch_duration = params[:watch_duration]
+              if params[:ed].present?
+                watch_course_video.is_finished = watch_course_video.total_duration >= watch_course_video.duration
+              end
+              watch_course_video.save!
+            end
           end
         end
       else