Shocking footage has emerged of a woman who is three months pregnant being attacked by a 70-year-old man in a row over a bus seat in China.

The video, captured in Kunming, Yunan Province on Wednesday, shows the man arguing with and then assaulting the woman after she refuses to give up a priority seat.

Fellow passengers can be seen trying to intervene and give him a different seat as he hit her - reportedly due to her pregnancy not yet showing obviously.