diff --git a/app/views/users/_course_boardlist.html.erb b/app/views/users/_course_boardlist.html.erb
index ce5881a4a..c92d117ee 100644
--- a/app/views/users/_course_boardlist.html.erb
+++ b/app/views/users/_course_boardlist.html.erb
@@ -42,7 +42,7 @@
                   <% else %>
                       <% content = activity.parent.content %>
                   <% end %>
-                  <p><%=render :partial =>"users/intro_content_ex", :locals=>{:user_activity_id =>activity.id, :content=>content, :maxheight=>54} %></p>
+                  <p><%=render :partial =>"users/intro_content_ex", :locals=>{:user_activity_id =>activity.id, :content=>content, :maxheight=>54, :maxwordsnum=>100} %></p>
                 </div>
                 <div class="ml15 mt10">
                   <span class="grayTxt">发帖时间：<%= format_time(activity.created_on) %></span>
diff --git a/app/views/users/_course_newslist.html.erb b/app/views/users/_course_newslist.html.erb
index ca782b0d5..ff99e116e 100644
--- a/app/views/users/_course_newslist.html.erb
+++ b/app/views/users/_course_newslist.html.erb
@@ -30,7 +30,7 @@
                   <div class="cl"></div>
                 </div>
                 <div class="massages-content ml15">
-                  <p><%=render :partial =>"users/intro_content_ex", :locals=>{:user_activity_id =>activity.id, :content=>activity.description, :maxheight=>54} %></p>
+                  <p><%=render :partial =>"users/intro_content_ex", :locals=>{:user_activity_id =>activity.id, :content=>activity.description, :maxheight=>54, :maxwordsnum=>100} %></p>
                 </div>
                 <div class="ml15 mt10">
                   <span class="grayTxt">发布时间：<%= format_time(activity.created_on) %></span>
diff --git a/app/views/users/_intro_content_ex.html.erb b/app/views/users/_intro_content_ex.html.erb
index ae88fc6ac..e3baf3fe2 100644
--- a/app/views/users/_intro_content_ex.html.erb
+++ b/app/views/users/_intro_content_ex.html.erb
@@ -12,6 +12,6 @@
             $("#activity_description_<%= user_activity_id%>").css("max-height", heightType + "px");
         }
 
-        description_showwords_ellipsis(<%=user_activity_id %>);
+        description_showwords_ellipsis(<%=user_activity_id %>,<%= maxwordsnum %>);
     });
 </script>
\ No newline at end of file
diff --git a/app/views/users/_project_boardlist.html.erb b/app/views/users/_project_boardlist.html.erb
index 8a306523f..5f61d26ef 100644
--- a/app/views/users/_project_boardlist.html.erb
+++ b/app/views/users/_project_boardlist.html.erb
@@ -42,7 +42,7 @@
                   <% else %>
                       <% content = activity.parent.content %>
                   <% end %>
-                  <p><%=render :partial =>"users/intro_content_ex", :locals=>{:user_activity_id =>activity.id, :content=>content, :maxheight=>54 } %></p>
+                  <p><%=render :partial =>"users/intro_content_ex", :locals=>{:user_activity_id =>activity.id, :content=>content, :maxheight=>54, :maxwordsnum=>100} %></p>
                 </div>
                 <div class="ml15 mt10">
                   <span class="grayTxt">发帖时间：<%= format_time(activity.created_on) %></span>
diff --git a/public/javascripts/application.js b/public/javascripts/application.js
index 7c52bae35..aa445f817 100644
--- a/public/javascripts/application.js
+++ b/public/javascripts/application.js
@@ -1240,7 +1240,7 @@ function expand_reply(container,btnid){
 }
 
 //by yk 列表描述将文字和起来去掉空格多于100就显示省略号
-function description_showwords_ellipsis(id){
+function description_showwords_ellipsis(id,num){
     var str = "";
     $("#intro_content_"+id).each(function () {
         str = str + $(this).text();
@@ -1249,8 +1249,8 @@ function description_showwords_ellipsis(id){
     //去掉空格
     str = str.replace(/\s/gi,'');
 
-    if(str.length > 100){
-        str = str.substring(0,100)+"...";
+    if(str.length > num){
+        str = str.substring(0,num)+"...";
     }
 
     $("#intro_content_"+id).html(str);