Hello I have a diplomat passport and I would love to visit china what are the requirements ?

Well, if you go there for tourism purpose, you should apply for an L type visa. First, prepare all the application documents, such as your passport, a copy of the passport's info page, a completely filled-out application form with a recent bare-headed photo glued o it, round-trip tickets and hotel booking records. Then, submit all documents to the PRC embassy.