A bounce treadmill, comprising: a base, with a drive mechanism disposed between opposite two side walls, the drive mechanism being driven by a motor to drive a pair of transmission elements to rotate cyclically in the longitudinal direction of the base; a plurality of running belt units, connected between the pair of transmission elements, and the plurality of running belt units being disposed along surrounding direction of the transmission elements and separated from each other, wherein each of the running belt units at least including: a fixed seat, with two opposite ends being respectively fixed to the pair of transmission elements; characterized in that: at least one elastic element, with two ends being respectively fixed to the two opposite ends of the fixed seat; and a running belt piece, with two ends being respectively fixed to the two opposite ends of the fixed seat and a lower surface of the running belt piece being connected with the elastic element; wherein the fixed seat has a beam frame, and two ends of the beam frame are respectively provided with a convex seat, upper surfaces of the convex seats are higher than upper surface of the beam frame, and the two ends of the elastic element are respectively fixed to the convex seats to keep a space between the lower surface of the elastic element and the upper surface of the beam frame. a base, with a drive mechanism disposed between opposite two side walls, the drive mechanism being driven by a motor to drive a pair of transmission elements to rotate cyclically in the longitudinal direction of the base; a plurality of running belt units, connected between the pair of transmission elements, and the plurality of running belt units being disposed along surrounding direction of the transmission elements and separated from each other, wherein each of the running belt units at least including: a fixed seat, with two opposite ends being respectively fixed to the pair of transmission elements; characterized in that: at least one elastic element, with two ends being respectively fixed to the two opposite ends of the fixed seat; and a running belt piece, with two ends being respectively fixed to the two opposite ends of the fixed seat and a lower surface of the running belt piece being connected with the elastic element; wherein the fixed seat has a beam frame, and two ends of the beam frame are respectively provided with a convex seat, upper surfaces of the convex seats are higher than upper surface of the beam frame, and the two ends of the elastic element are respectively fixed to the convex seats to keep a space between the lower surface of the elastic element and the upper surface of the beam frame. a fixed seat, with two opposite ends being respectively fixed to the pair of transmission elements; characterized in that: at least one elastic element, with two ends being respectively fixed to the two opposite ends of the fixed seat; and a running belt piece, with two ends being respectively fixed to the two opposite ends of the fixed seat and a lower surface of the running belt piece being connected with the elastic element; wherein the fixed seat has a beam frame, and two ends of the beam frame are respectively provided with a convex seat, upper surfaces of the convex seats are higher than upper surface of the beam frame, and the two ends of the elastic element are respectively fixed to the convex seats to keep a space between the lower surface of the elastic element and the upper surface of the beam frame. at least one elastic element, with two ends being respectively fixed to the two opposite ends of the fixed seat; and a running belt piece, with two ends being respectively fixed to the two opposite ends of the fixed seat and a lower surface of the running belt piece being connected with the elastic element; wherein the fixed seat has a beam frame, and two ends of the beam frame are respectively provided with a convex seat, upper surfaces of the convex seats are higher than upper surface of the beam frame, and the two ends of the elastic element are respectively fixed to the convex seats to keep a space between the lower surface of the elastic element and the upper surface of the beam frame.