Undergraduate students need to prepare TOEFL, SAT and GPA, which is very demanding, and they also need at least 500,000 RMB cash deposit certificate.

Then visit official website of Stanford University to check the specific requirements, apply for an appointment online, and send all the materials required for the application to the address of Stanford University given on the webpage before the application deadline.

Graduate students need TOEFL, GRE, GPA, and generally need one or two letters of recommendation from your university professor or employer or corporate celebrity. The more famous the better. You also need a cash deposit certificate of at least 500,000 RMB.

Then apply as above.

Doesn't mean you can go if you want. You must get good grades and have a certain economic foundation, because Stanford scholarships are not so easy to get.