diff --git a/script/default/test4.jmx b/script/default/test4.jmx
index eb0e5ab..0ecebda 100644
--- a/script/default/test4.jmx
+++ b/script/default/test4.jmx
@@ -12,39 +12,35 @@
       <stringProp name="TestPlan.user_define_classpath"></stringProp>
     </TestPlan>
     <hashTree>
-      <HeaderManager guiclass="HeaderPanel" testclass="HeaderManager" testname="header_pc" enabled="true">
+      <HeaderManager guiclass="HeaderPanel" testclass="HeaderManager" testname="header_pc_item" enabled="true">
         <collectionProp name="HeaderManager.headers">
           <elementProp name="" elementType="Header">
-            <stringProp name="Header.name">User-Agent</stringProp>
-            <stringProp name="Header.value">Mozilla/5.0 (Windows NT 6.1; WOW64; rv:48.0) Gecko/20100101 Firefox/48.0</stringProp>
-          </elementProp>
-          <elementProp name="" elementType="Header">
             <stringProp name="Header.name">Accept</stringProp>
             <stringProp name="Header.value">text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8</stringProp>
           </elementProp>
           <elementProp name="" elementType="Header">
-            <stringProp name="Header.name">Accept-Language</stringProp>
-            <stringProp name="Header.value">zh-CN,zh;q=0.8,en-US;q=0.5,en;q=</stringProp>
-          </elementProp>
-          <elementProp name="" elementType="Header">
             <stringProp name="Header.name">Accept-Encoding</stringProp>
             <stringProp name="Header.value">gzip, deflate</stringProp>
           </elementProp>
           <elementProp name="" elementType="Header">
-            <stringProp name="Header.name">Content-Type</stringProp>
-            <stringProp name="Header.value">application/x-www-form-urlencoded; charset=UTF-8</stringProp>
+            <stringProp name="Header.name">Accept-Language</stringProp>
+            <stringProp name="Header.value">zh-CN,zh;q=0.8</stringProp>
+          </elementProp>
+          <elementProp name="" elementType="Header">
+            <stringProp name="Header.name">Cache-Control</stringProp>
+            <stringProp name="Header.value">max-age=0</stringProp>
           </elementProp>
           <elementProp name="" elementType="Header">
-            <stringProp name="Header.name">X-Requested-With</stringProp>
-            <stringProp name="Header.value">XMLHttpRequest</stringProp>
+            <stringProp name="Header.name">Host</stringProp>
+            <stringProp name="Header.value">item.yohobuy.com</stringProp>
           </elementProp>
           <elementProp name="" elementType="Header">
             <stringProp name="Header.name">Upgrade-Insecure-Requests</stringProp>
             <stringProp name="Header.value">1</stringProp>
           </elementProp>
           <elementProp name="" elementType="Header">
-            <stringProp name="Header.name">Host</stringProp>
-            <stringProp name="Header.value">item.yohobuy.com</stringProp>
+            <stringProp name="Header.name">User-Agent</stringProp>
+            <stringProp name="Header.value">Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.100 Safari/537.36</stringProp>
           </elementProp>
         </collectionProp>
         <stringProp name="TestPlan.comments"></stringProp>