diff --git a/app/views/homework_common/_homework_detail_manual_form.html.erb b/app/views/homework_common/_homework_detail_manual_form.html.erb
index ffec93e73..3af12973a 100644
--- a/app/views/homework_common/_homework_detail_manual_form.html.erb
+++ b/app/views/homework_common/_homework_detail_manual_form.html.erb
@@ -48,7 +48,8 @@
     <ul class="ml10">
       <li>
         <label class="label02">迟交扣分：&nbsp;</label>
-        <%= select_tag :late_penalty,options_for_select(late_penalty_option,homework.late_penalty), {:class => "fl mb10 h26 w70"}  %>
+        <%#= select_tag :late_penalty,options_for_select(late_penalty_option,homework.late_penalty), {:class => "fl mb10 h26 w70"}  %>
+        <input type="number" value="<%= homework.late_penalty%>" min="0" max="50" class="fl mb10 h26 w70" name="late_penalty" onkeyup="check_late_penalty()">
         <span class="fl mt5">&nbsp;分</span>
         <div class="cl"></div>
       </li>
diff --git a/app/views/homework_common/_homework_detail_programing_form.html.erb b/app/views/homework_common/_homework_detail_programing_form.html.erb
index 8c589c040..829905327 100644
--- a/app/views/homework_common/_homework_detail_programing_form.html.erb
+++ b/app/views/homework_common/_homework_detail_programing_form.html.erb
@@ -43,7 +43,8 @@
 
   <li>
     <label class="label02">迟交扣分：&nbsp;</label>
-    <%= select_tag :late_penalty,options_for_select(late_penalty_option,homework.late_penalty), {:class => "fl mb10 h26 w70"}  %>
+    <%#= select_tag :late_penalty,options_for_select(late_penalty_option,homework.late_penalty), {:class => "fl mb10 h26 w70"}  %>
+    <input type="number" value="<%= homework.late_penalty%>" min="0" max="50" class="fl mb10 h26 w70" name="late_penalty" onkeyup="check_late_penalty()">
     <span class="fl mt5">&nbsp;分</span>
     <div class="cl"></div>
   </li>
diff --git a/public/javascripts/course.js b/public/javascripts/course.js
index 6ba202b28..be29fdc30 100644
--- a/public/javascripts/course.js
+++ b/public/javascripts/course.js
@@ -412,6 +412,24 @@ function regex_homework_name()
     }
 }
 
+//处理迟交扣分
+function check_late_penalty()
+{
+    var obj = $("input[name='late_penalty']");
+    var regex = /^\d+$/;
+    if(regex.test(obj.val()))
+    {
+        if(obj.val() > 50)
+        {
+            obj.val("50");
+        }
+    }
+    else
+    {
+        obj.val("0");
+    }
+}
+
 //验证匿评数量
 function regex_evaluation_num()
 {