can u apply for USA visa in china as a student in china to spend holidays and what are needed?

Yes, you can apply for USA visa in China. For tourism, the required documents are: yoru valid passport, DS-160 application form, One photograph of two inches square (51mm x 51mm) color photograph, less than 6 months old, against a white background, full frontal view, passports containing all previous U.S. visas even if expired, evidence of Why You Will Return to China, proof of Finances.