diff --git a/chapter2/init.sql b/chapter2/init.sql
index 773ffea..ee06b37 100644
--- a/chapter2/init.sql
+++ b/chapter2/init.sql
@@ -86,3 +86,4 @@ create table datas (
   PRIMARY KEY (`id`)
 ) comment = '通用配置表';
 insert into datas (`key`, data) values ('from_type', '{}');
+insert into datas (`key`, data) values ('last_month_sell', '{}');
diff --git a/chapter2/mysite/myapp/static/scripts/trend.js b/chapter2/mysite/myapp/static/scripts/trend.js
index 1dd5fe4..2c75b4d 100755
--- a/chapter2/mysite/myapp/static/scripts/trend.js
+++ b/chapter2/mysite/myapp/static/scripts/trend.js
@@ -145,7 +145,6 @@ $(function(){
      ]
    })
 
-   //传染病发病趋势
    if (document.getElementById('lineChart1')) {
     var lineChart1 = echarts.init(document.getElementById('lineChart1'));
    if(lineChart1){
@@ -356,7 +355,7 @@ $(function(){
    var lineChart2 = echarts.init(document.getElementById('lineChart2'));
    lineChart2.setOption({
      title: {
-        text: '购买趋势',
+        text: '前5月购买趋势',
         textStyle:{
            fontSize:16,
            color:'#32cd32'
@@ -424,7 +423,7 @@ $(function(){
          ],
      series : [
          {
-             name:'购买趋势',
+             name:'前5月购买趋势',
              type:'line',
              smooth:true,
              itemStyle: {normal: {areaStyle: {type: 'default'}}},
diff --git a/chapter2/mysite/myapp/templates/myapp/result.html b/chapter2/mysite/myapp/templates/myapp/result.html
index 344128c..9d7c9dc 100644
--- a/chapter2/mysite/myapp/templates/myapp/result.html
+++ b/chapter2/mysite/myapp/templates/myapp/result.html
@@ -69,7 +69,7 @@
   <div class="div_any">
       <div class="left div_any01" style="width:100%;">
           <div class="div_any_child" style="width:98%;position:relative;height: 420px;">
-              <div class="div_any_title"><img src="{% static "images/title_17.png" %}">TOP10商品排行</div>
+              <div class="div_any_title"><img src="{% static "images/title_17.png" %}">商品销售排行</div>
               <div id="histogramChart3"  style="width: 55%;display: inline-block;height: 400px;margin-top: 15px;"></div>
               <div id="lineChart2"  style="width: 38%;height: 90%;display: inline-block;"></div>
           </div>
diff --git a/chapter3/spark.py b/chapter3/spark.py
index bc1c870..660953f 100644
--- a/chapter3/spark.py
+++ b/chapter3/spark.py
@@ -38,6 +38,26 @@ def getYesterday(day):
     yesterday=today-oneday  
     return yesterday.strftime('%Y-%m-%d')
 
+def get_last_month(num):
+    date = datetime.datetime.now()
+    year = date.year
+    month = date.month
+    month = month - num
+    if month<=0:
+        month = 12 - (num-1)
+        year -= 1
+    return "%d-%d" % (year, month)
+
+def collect_last_month_sells(spark):
+    data = {}
+    for i in range(5):
+        month = get_last_month(i)
+        df = spark.sql("select count(*) as N from jd_comment where comment_time like '"+month+"%' ")
+        jd_comment_count = df.rdd.collect()[0]["N"]
+        data[month] = jd_comment_count
+    mysql_execute("update datas set data = '{}' where `key` = 'last_month_sell'".format( json.dumps(data,ensure_ascii=False) ))
+
+
 
 def collect_crawl_info(spark):
     df = spark.sql("select count(*) as N from jd_comment")
@@ -116,6 +136,7 @@ if __name__ == "__main__":
             get_last_day_count(spark)
             collect_top10_sells(spark)
             collect_from_type(spark)
+            collect_last_month_sells(spark)
             count = 1
 
         time.sleep(10)