diff --git a/app/views/courses/_course_form.html.erb b/app/views/courses/_course_form.html.erb
index 79db56aab..23a0caabd 100644
--- a/app/views/courses/_course_form.html.erb
+++ b/app/views/courses/_course_form.html.erb
@@ -14,6 +14,16 @@
     }
 </script>
 
+<script  type="text/javascript">
+    function check(){
+        var regex=/^\d*$/;
+        if (!regex.test($("#class_period").val())){
+            alert("学时只能为整数");
+        }
+        }
+    }
+</script>
+
 
 
 <% object = [] %>
@@ -67,11 +77,11 @@
     -->
     <% unless @course.nil?%>
         <p><table><tr><td><span class="info" align="right" style="width: 90px; font-weight: bold ;margin-left:22px"><%= l(:label_class_period) %><span class="required"> *&nbsp;&nbsp;</span></span>
-  <span class="info" style="width: 10px"><%= text_field_tag :class_period, @course.class_period, :placeholder => "在此输入课时" %></span> <span>&nbsp;<strong><%= l(:label_class_hour)%></strong></span>
+  <span class="info" style="width: 10px;"><%= text_field_tag :class_period, @course.class_period, :placeholder => "在此输入课时",:maxlength=>5 %></span> <span>&nbsp;<strong><%= l(:label_class_hour)%></strong></span>
 </td></tr></table></p>
     <% else %>
         <p><table><tr><td><span class="info" align="right" style="width: 90px; font-weight: bold ;margin-left:22px"><%= l(:label_class_period) %><span class="required"> *&nbsp;&nbsp;</span></span>
-  <span class="info" style="width: 10px"><%= text_field_tag :class_period, nil, :placeholder => "在此输入课时" %></span><strong><%= l(:label_class_hour)%></strong>
+  <span class="info" style="width: 10px;"><%= text_field_tag :class_period, nil, :placeholder => "在此输入课时",:maxlength=>5 %></span><strong><%= l(:label_class_hour)%></strong>
 </td></tr></table></p>
     <% end %>