my chinese date birth not same on my uk passport how can get china visa. what kind proof need

Hi, you should provide your original Chinese passport and the photocopy of the information page of the passport, if thr date of birth is not the same, an official document for birth date change should be provided. My suggestion that you can get this document notarized by a British Notary Public, authenticated by the Legalization Office (LO) of British Foreign and Commonwealth Office, at last, get it authenticated Chinese embassy. Anyway, you can contact the embassy or consulate for details.