diff --git a/public/images/syllabus/icons_syllabus.png b/public/images/syllabus/icons_syllabus.png
index 4afdb729f..3b81336c4 100644
Binary files a/public/images/syllabus/icons_syllabus.png and b/public/images/syllabus/icons_syllabus.png differ
diff --git a/public/stylesheets/syllabus.css b/public/stylesheets/syllabus.css
index d6e7c19e9..d28ab1037 100644
--- a/public/stylesheets/syllabus.css
+++ b/public/stylesheets/syllabus.css
@@ -74,8 +74,8 @@ input.syllabus_input_min{
 
 /*课程大纲-课程列表*/
 .icon_course{ background: url(../images/syllabus/icons_syllabus.png) 0 -35px no-repeat; width:18px; height:15px; display:block;}
-.icons_sy_open{background: url(../images/syllabus/icons_syllabus.png) 0 -53px no-repeat; width:20px; height:23px; display:block;  cursor:pointer; }
-.icons_sy_close{background: url(../images/syllabus/icons_syllabus.png) -26px -53px no-repeat; width:20px; height:23px; display:block;  }
+.icons_sy_open{background: url(../images/syllabus/icons_syllabus.png) 0 -50px no-repeat; width:20px; height:23px; display:block;  cursor:pointer; }
+.icons_sy_close{background: url(../images/syllabus/icons_syllabus.png) -26px -52px no-repeat; width:20px; height:23px; display:block;  }
 .syllabus_courses_box {position:relative;}
 .icons_sy_setting{background: url(../images/syllabus/icons_syllabus.png) -51px -33px no-repeat; width:20px; height:20px; display:block; position:absolute; right:10px; top:10px; }
 .icons_sy_setting:hover{background: url(../images/syllabus/icons_syllabus.png) -25px -33px no-repeat; }