diff --git a/app/services/create_watch_video_service.rb b/app/services/create_watch_video_service.rb
index afdd57b5b..9432c65bc 100644
--- a/app/services/create_watch_video_service.rb
+++ b/app/services/create_watch_video_service.rb
@@ -31,7 +31,9 @@ class CreateWatchVideoService < ApplicationService
           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]
-            watch_course_video.is_finished = (watch_course_video.duration <= params[:watch_duration].to_f)
+            if params[:ed].present?
+              watch_course_video.is_finished = watch_course_video.watch_video_histories.sum(:total_duration) >= watch_course_video.duration
+            end
             watch_course_video.end_at = current_time
             watch_course_video.save!
           end