diff --git a/app/views/courses/new.html.erb b/app/views/courses/new.html.erb
index 4c4374a29..f754c4540 100644
--- a/app/views/courses/new.html.erb
+++ b/app/views/courses/new.html.erb
@@ -17,12 +17,13 @@
         <div class="cl"></div>
         <li  class="ml45">
           <label><span class="c_red">*</span>&nbsp;<%= l(:label_tags_course_name)%>&nbsp;&nbsp;：</label>
-          <input  type="text" name="course[name]" id="new_course_name" class="courses_input" maxlength="100" placeholder="例如：软件工程计算机系A班" onkeyup="regex_course_name('new');">
+          <input  type="text" name="course[name]" id="new_course_name" class="courses_input" maxlength="100" placeholder="例如：计算机系2016秋季A班" onkeyup="regex_course_name('new');">
           <span class="c_red" id="new_course_name_notice" style="display: none;">班级名称不能为空且至少有两个字符</span>
         </li>
         <div class="cl"></div>
         <li class="ml125 mb5 fontGrey3"><span class="success-icon mr25">正确示例：计算机系2016秋季A班</span></li>
         <li class="ml125 mb10 fontGrey3"><span class="error-icon">错误示例：软件工程 - 计算机系2016秋季A班</span></li>
+        <li class="ml125 mt10 mb10 fontGrey2" style="max-width: 544px;">班级是一个由教师、助教（教辅）和学生组成的临时的教学群体，在规定的时间内（如一个学期）完成一门课程规定的教学任务。本质上，一门课程就是一个教学计划。</li>
         <li  class="ml45">
           <label><span class="c_red">*</span>&nbsp;<%= l(:label_class_period)%>&nbsp;&nbsp;：</label>
           <input  type="text" name="class_period" id="new_class_period" class="hwork_input02" onkeyup="regex_course_class_period('new');" placeholder="例如：54" maxlength="6">