Abstract: The invention relates to the structure improvement of a trampoline, which comprises at least two groups of connecting pipes, which are distributed in parallel between the connecting pipes and provided with an inner foot pad on the end, and two groups of trampoline supporting surfaces, which are respectively arranged on the outside of both ends of the connecting pipe, respectively connected with the foresaid connecting pipe on the inner side, and provided with a supporting foot frame mechanism on the outer side. And the supporting foot frame mechanism is provided with an outer foot pad on the bottom end; The structure design of the invention is reasonable, and the trampoline can provide two trampoline supporting surfaces in the course of use, which can be used for the training exercises of moving to the right or left and jumping of the two legs.