diff --git a/app/views/exercise/_student_table.html.erb b/app/views/exercise/_student_table.html.erb
index 5a93c352a..979e711bc 100644
--- a/app/views/exercise/_student_table.html.erb
+++ b/app/views/exercise/_student_table.html.erb
@@ -65,7 +65,7 @@
         <td class="hworkList50 <%= score_color exercise.score%> student_final_scor_info">
           <%= exercise.score.nil? ? "--" : format("%.1f",exercise.score)%>
         </td>
-        <td class="hworkTip" style="display: none" id="work_click_<%= exercise.id%>"><em></em><span></span><font class="fontGrey2">点击查看详情</font></td>
+        <td><div style="position:relative;"><div class="hworkTip" style="display: none" id="work_click_<%= exercise.id%>"><em></em><span></span><font class="fontGrey2">点击查看详情</font></div></div></td>
       </tr>
   <% end%>
 </table>
\ No newline at end of file
diff --git a/app/views/student_work/_evaluation_un_work.html.erb b/app/views/student_work/_evaluation_un_work.html.erb
index ba91589fa..9cac477ab 100644
--- a/app/views/student_work/_evaluation_un_work.html.erb
+++ b/app/views/student_work/_evaluation_un_work.html.erb
@@ -96,7 +96,7 @@
         </div>
     <% end%>
   </td>
-  <td class="hworkTip" style="display: none" id="work_click_<%= student_work.id%>"><em></em><span></span><font class="fontGrey2">点击查看详情</font></td>
+  <td><div style="position:relative;"><div class="hworkTip" style="display: none" id="work_click_<%= student_work.id%>"><em></em><span></span><font class="fontGrey2">点击查看详情</font></div></div></td>
 </tr>
 <script type="text/javascript">
     $(".student_work_<%= student_work.id%>").mouseenter(function(){
diff --git a/app/views/student_work/_evaluation_work.html.erb b/app/views/student_work/_evaluation_work.html.erb
index 55861d444..dac46f289 100644
--- a/app/views/student_work/_evaluation_work.html.erb
+++ b/app/views/student_work/_evaluation_work.html.erb
@@ -79,7 +79,7 @@
   <td class="hworkList50 <%= my_score.nil? ? 'c_grey' : score_color(my_score.score)%> mr10 ml10">
     <%= my_score.nil? ? "--" : format("%.1f",my_score.score)%>
   </td>
-  <td class="hworkTip" style="display: none" id="work_click_<%= student_work.id%>"><em></em><span></span><font class="fontGrey2">点击查看详情</font></td>
+  <td><div style="position:relative;"><div class="hworkTip" style="display: none" id="work_click_<%= student_work.id%>"><em></em><span></span><font class="fontGrey2">点击查看详情</font></div></div></td>
 </tr>
 <script type="text/javascript">
     $(".student_work_<%= student_work.id%>").mouseenter(function(){
diff --git a/public/stylesheets/courses.css b/public/stylesheets/courses.css
index d1831f4a8..49f87416c 100644
--- a/public/stylesheets/courses.css
+++ b/public/stylesheets/courses.css
@@ -47,7 +47,7 @@ a:hover.news_foot{ color:#787b7e; border:1px solid #d4d4d4;}
 .hworkListRow:hover {background-color:#f6f6f7;}
 .hworkUl li{ float:left;}
 .hworkListRow li{ float:left;}
-.hworkTip{position:absolute; padding:3px 5px; border:1px solid #eaeaea; display:block; right:-108px; top:20px; background-color:#ffffff; line-height:20px; box-shadow:0px 2px 8px rgba(146, 153, 169, 0.5);}
+.hworkTip{position:absolute; padding:3px 5px; border:1px solid #eaeaea; display:block; right:-108px; top:-15px; background-color:#ffffff; line-height:20px; box-shadow:0px 2px 8px rgba(146, 153, 169, 0.5);}
 .hworkTip em {display:block; border-width:8px; position:absolute; bottom:4px; left:-16px; border-style:dashed solid dashed dashed; border-color:transparent #eaeaea transparent transparent; font-size:0; line-height:0;}
 .hworkTip span {display:block; border-width:8px; position:absolute; bottom:4px; left:-15px; border-style:dashed solid dashed dashed; border-color:transparent #FFF transparent transparent; font-size:0; line-height:0;}
 .hworkList340 {width:335px; text-align:left; height:50px; line-height:50px;padding-left:5px;}