diff --git a/app/views/welcome/course.html.erb b/app/views/welcome/course.html.erb
index c399f1cee..3aca2c350 100644
--- a/app/views/welcome/course.html.erb
+++ b/app/views/welcome/course.html.erb
@@ -120,9 +120,9 @@
                       <%#=course.try(:teacher).try(:name)%>
                     </span>
                 </div>
-                <div class='desc_item text_nowrap' style="width: 310px;">
+                <div class='desc_item text_nowrap'>
                   [<%= get_course_term course %>]
-                  <%= link_to(course.name, course_path(course.id), :class => "d-g-blue d-p-project-name", :title => "#{course.name}") %>
+                  <%= link_to(course.name.truncate(30, omission: '...'), course_path(course.id), :class => "d-g-blue d-p-project-name", :title => "#{course.name}") %>
                   (<%= "#{studentCount(course)}人" %>)
                   <% files_count = course.attachments.count.to_s %>
                   (<%= link_to "#{files_count}份", course_files_path(course) %>资料)
@@ -161,9 +161,9 @@
                 <%= link_to(course.try(:teacher).try(:realname), user_path(course.teacher)) %>
                 </span>
                 </div>
-                <div class='desc_item text_nowrap' style="width: 310px;">
+                <div class='desc_item text_nowrap'>
                   [<%= get_course_term course %>]
-                  <%= link_to(course.name, course_path(course.id), :class => "d-g-blue d-p-project-name", :title => "#{course.name}") %>
+                  <%= link_to(course.name.truncate(30, omission: '...'), course_path(course.id), :class => "d-g-blue d-p-project-name", :title => "#{course.name}") %>
                   (<%= "#{studentCount(course)}人" %>)
                   <% files_count = course.attachments.count.to_s %>
                   (<%= link_to "#{files_count}份", course_files_path(course) %>资料)
@@ -206,10 +206,10 @@
                     <%= link_to(course.try(:teacher).try(:name), user_path(course.teacher)) %>
                 </span>
                     </div>
-                    <div class='desc_item text_nowrap' style="width: 310px;">
+                    <div class='desc_item text_nowrap'>
                       [<%= get_course_term course %>]
-                      <%= link_to(course.name, course_path(course.id), :class => "d-g-blue d-p-project-name", :title => "#{course.name}") %>
-                      <%= "#{studentCount(course)}人" %> )
+                      <%= link_to(course.name.truncate(30, omission: '...'), course_path(course.id), :class => "d-g-blue d-p-project-name", :title => "#{course.name}") %>
+                      (<%= "#{studentCount(course)}人" %> )
                       <% files_count = course.attachments.count.to_i.to_s %>
                       (<%= link_to "#{files_count}份", course_files_path(course) %>资料)
                     </div>