I am a Zimbabwean citizen,currently residing in Tanzania what documents do I need to go China

Yes, you need to apply for a visa to travel to China. For example, if you are going to China for sightseeing, you'll need a tourist visa. In this case, the requirements include: visa application form V2011A and V2011B, one recent passport photo, valid passport, flight and hotel reservation, your Tanzania resident permit, other deemed necessary documents by the embassy.