To provide a trampoline wherein a repeated jumping exercise can be comfortably performed in the approximately total region on the upper surface of the trampoline, and a user is prevented from falling off from the trampoline during the repeated jumping exercise.

During the repeated jumping exercise, even if the dropping location of the user misses the internal net 11, since an external net 12 is provided on the outer periphery of the internal net 11, the user can safely land on the external net 12, and is prevented from falling down from this safe trampoline. The external net 12 is surely supported by a plate spring 13 from the lower side in the same manner as the internal net 11 as well. Therefore, the user can perform the repeated jumping exercise in the approximately total region on the upper surface of the safe trampoline 10.