I need your help!

I am a chinese ,and I have used this test,it is helpful for my website ,but ,how can I use this service on my website?

I assume you are referring to the Page Speed Service which is tested from http://www.webpagetest.org/compare ? If so then you need to go here: https://developers.google.com/speed/pagespeed/service

thank you I have do as you say ,but in china ,I can not open that web forum, sometimes ,I don`t like my country so much

Sorry, there are other similar services that may work for you as well. Cloudflare is a popular option that has a free tier and there are several others listed here: https://sites.google.com/a/webpagetest.org/docs/other-resources/optimization-resources