CCTV footage has captured the moment a four-year-old girl falls out of a moving car on a busy road in China.

Police in Wenzhou, Zhejiang province, said the child opened the door accidentally while climbing into the front seat of the car.

"When it happened, a nearby taxi and all the other cars weren't going too fast, and the taxi braked immediately so it did not hit the child," said Wenzhou police officer Chen Shu.

The footage shows the girl's father jumping out of the car seconds after the accident to pick his daughter off the road.

The girl managed to escape with minor bruises.

The unmanned car then continued on its course for about ten metres before hitting a tree on the curb.