Do African students studying in Wuhan, China need a visa to travel to Hong Kong?

It depends on which country African students come from.

Because some countries can enter Hong Kong face-to-face for 7-90 days, details can be found on the website of the Hong Kong Immigration Department.

If it's not a visa country, it depends on what kind of identity documents students hold to live in China, which is managed by Wuhan local public security bureau.

If so, he probably needs to apply for a visa, because he is not a mainland citizen and cannot apply for a Hong Kong and Macao pass. Visas can be processed at the representative office of the Hong Kong Government in the Mainland. Personally, I think the public security bureau should also be able to. You can call the Exit-Entry Administration Office of Hubei Province for consultation.