I am ghanain citizen based in barcelona with valid resident permit. please tell me the requirement needed for Chinese visa

I'm not clear what kind of visa are you going to apply. Below are the requirements for a tourism visa for your reference:
(1) Original passport remaining to be valid for at least six months from the date of application and with 2 blank visa pages.
(2) completed Visa Application Form (form V2011A and V2011B) with a recently-taken passport photo, stuck on it
(3) your Spain resident permit
(4) other deemed necessary requirements by the Consulate-General of China in Barcelona