This paper aims to understand the research progress of pedestrian-ground contact injuries in pedestrian-vehicle collision accidents and propose feasible pedestrian-ground contact injury protection methods. The existing research results were reviewed from five aspects: characteristics of pedestrian-vehicle collision accidents, pedestrian injury evaluation indexes, source of pedestrian injuries, influencing factors of pedestrian-ground contact injuries, and pedestrian-ground contact injury protection methods, and the problems existing in the existing research were discussed. The development of pedestrian-ground contact protection methods was pointed out. The research on pedestrian-ground contact injuries still needs to be improved, and more research and tests of the mechanism and influencing factors of pedestrian-ground contact injuries are required. Through the review of existing pedestrian-ground contact injury protection technologies, it is pointed out that the risk of pedestrian injuries can be reduced in the future by optimizing the shape of the front of the vehicle, installing devices for ensuring pedestrian safety, and controlling the braking of the vehicle. In most accidents, the collision speeds are low and medium. At low speed, pedestrian-ground contact injuries can't be ignored, and they can be reduced by controlling the braking of the vehicle. In addition, the evaluation indexes of pedestrian-ground contact injuries are still insufficient. This paper can provide a reference for further research on the mechanism and protection methods of pedestrian-ground contact injuries.