Abstract: A bounce treadmill is disclosed, with the main feature in that an annular running belt composed of a plurality of running belt units is arranged on a base, and each running belt unit at least comprises: a fixed seat, an elastic element and a running belt piece; wherein, two opposite ends of the fixed seat are respectively fixed to a pair of transmission elements arranged on the base, two ends of the elastic element are respectively fixed to the opposite ends of the fixed seat, two ends of the running belt piece are respectively fixed to the two opposite ends of the fixed seat, and the elastic element is connected to the bottom of the running belt piece, whereby when the running belt piece is bent and deformed under the weight to create a downward force, absorbed by the elastic element and an upward elastic force is provided.