diff --git a/app/views/student_work/_homework_post_brief.html.erb b/app/views/student_work/_homework_post_brief.html.erb
index 41dccfd92..6b3c0d542 100644
--- a/app/views/student_work/_homework_post_brief.html.erb
+++ b/app/views/student_work/_homework_post_brief.html.erb
@@ -52,14 +52,14 @@
           <table class="mt5 test-set-table">
             <tr>
               <th width="25">&nbsp;</th>
-              <th width="290">测试集输入</th>
-              <th width="290">测试集输出</th>
+              <th width="290" style="max-width:290px;">测试集输入</th>
+              <th width="290" style="max-width:290px;">测试集输出</th>
             </tr>
             <% homework.homework_tests.each_with_index do |test, i| %>
                 <tr>
                   <td class="test_td_min"><%=i+1 %></td>
-                  <td><%=test.input %></td>
-                  <td ><%=test.output %></td>
+                  <td><pre style="max-width:290px; word-wrap:break-word; white-space:pre-wrap;"><%=test.input %></pre></td>
+                  <td><pre style="max-width:290px; word-wrap:break-word; white-space:pre-wrap;"><%=test.output %></pre></td>
                 </tr>
             <% end %>
           </table>