The appalling footage was captured by a fellow passenger on a busy subway train as the pervert inched closer to the unsuspecting woman.
This is the shocking moment a man was filmed rubbing his crotch against a woman on a busy subway train. The sickening clip, taken by a passenger in China, shows the man gyrating himself against a woman who stood in front of him in the glare of other passengers.
He continually rubs himself against her behind while she looks straight ahead, seemingly unaware of what he's doing. Near to the end of the video, the man reaches into his trousers apparently to adjust himself - and carries on again.
The video was uploaded online by a user based in Guangzhou, China.
Sexual harassment on public transport can be common in China, with some passengers calling for separate carriages to reduce the number of attacks.
Watch video below...