Usually, in the sports ground with sports equipment, it is required to design the installation height of sports equipment according to the safe falling height. The critical falling height is greatly related to the hardness and cushioning of ground materials. At present, the traditional cement floor is commonly replaced by the sports floor, which has certain cushioning and is more conducive to prevent injuries caused by falling. Sports floors include whole-polyurethane sports floor, mixed sports floor, cast-in-place sports floor, prefabricated sports floor, artificial turf sports floor, etc. In this paper, the critical falling height performance of different types of sports floors is obtained and compared by fitting the curves at different drop heights.