diff --git a/chapter2/mysite/myapp/static/scripts/trend.js b/chapter2/mysite/myapp/static/scripts/trend.js
index bed694f..4a62b30 100755
--- a/chapter2/mysite/myapp/static/scripts/trend.js
+++ b/chapter2/mysite/myapp/static/scripts/trend.js
@@ -101,7 +101,7 @@ $(function(){
      },
      tooltip : {
         trigger: 'item',
-        formatter: "{a}<br/>{b}<br/>{c}人"
+        formatter: "{a}点<br/>{b}<br/>{c}人购买"
     },
      calculable : true,
      yAxis : [