diff --git a/app/views/courses/index.html.erb b/app/views/courses/index.html.erb
index 3186d4b..bd305ad 100644
--- a/app/views/courses/index.html.erb
+++ b/app/views/courses/index.html.erb
@@ -79,7 +79,7 @@
                       <% else %>
                           <td><%= link_to "是",isdegree_course_path(course), class: 'btn btn-xs btn-info' %></td>
                       <% end %>
-                      <td><td><a class="btn btn-xs btn-success" href=<%="#{Rails.root}/public#{course.excel}"%> >下载最新资料</a></td></td>
+                      <td><td><a class="btn btn-xs btn-success" href=<%="#{Rails.root}#{course.excel}"%> >下载最新资料</a></td></td>
                       <td><%= course.excel %></td>
                   <% end %>
                 </tr>