This application discloses a traffic accident warning method performed by a computing device. After obtaining location data of a first vehicle and a second vehicle respectively, and videos captured by a first video camera onboard the first vehicle and a second video camera onboard the second vehicle, the computing device generates traffic scenes based on the road status data, the vehicle motion data, the pedestrian motion data obtained from the videos, and broadcasted traffic data, and then generates traffic accident models based on past traffic accidents, synthesizes a simulation video including one or more target features based on the traffic scenes and the traffic accident models at a target area associated with the target features. Finally, the computing device performs traffic accident prediction based on the simulation videos and sends warning information to the first vehicle in accordance with a determination that the first vehicle is about have an accident in the target area.