diff --git a/app/views/users/_course_homework.html.erb b/app/views/users/_course_homework.html.erb
index 3cdcc2053..743090a4d 100644
--- a/app/views/users/_course_homework.html.erb
+++ b/app/views/users/_course_homework.html.erb
@@ -81,9 +81,11 @@
             <div class="homepagePostSubmit">
               <%= link_to "模拟答题", new_user_commit_homework_users_path(homework_id: activity.id, is_test: true), class: 'c_blue test-program-btn', title: '教师可以通过模拟答题设置作业的标准答案' %>
             </div>
-            <div class="homepagePostSubmit">
-                <%= link_to "代码查重", work_canrepeat_student_work_index_path(homework: activity.id, course_id: activity.course.id), class: 'c_blue test-program-btn',:remote => true %>
-            </div>
+            <% if activity.homework_detail_manual.comment_status != 0 %>
+                <div class="homepagePostSubmit">
+                    <%= link_to "代码查重", work_canrepeat_student_work_index_path(homework: activity.id, course_id: activity.course.id), class: 'c_blue test-program-btn',:remote => true %>
+                </div>
+            <% end %>
       <% end %>
         <% if activity.homework_type == 2%>
             <div class="homepagePostDeadline mr15">
diff --git a/app/views/users/_user_homework_detail.html.erb b/app/views/users/_user_homework_detail.html.erb
index 5d443af48..4bab8d98f 100644
--- a/app/views/users/_user_homework_detail.html.erb
+++ b/app/views/users/_user_homework_detail.html.erb
@@ -80,9 +80,11 @@
             <div class="homepagePostSubmit">
               <%= link_to "模拟答题", new_user_commit_homework_users_path(homework_id: homework_common.id, is_test: true), class: 'c_blue test-program-btn', title: '教师可以通过模拟答题设置作业的标准答案' %>
             </div>
-            <div class="homepagePostSubmit">
-              <%= link_to "代码查重", work_canrepeat_student_work_index_path(homework: homework_common.id, course_id: homework_common.course_id), class: 'c_blue test-program-btn',:remote => true %>
-            </div>
+            <% if homework_common.homework_detail_manual.comment_status != 0 %>
+                <div class="homepagePostSubmit">
+                  <%= link_to "代码查重", work_canrepeat_student_work_index_path(homework: homework_common.id, course_id: homework_common.course_id), class: 'c_blue test-program-btn',:remote => true %>
+                </div>
+            <% end %>
         <% end %>
         <% if homework_common.homework_type == 2%>
             <div class="homepagePostDeadline mr15">