Passive weight-bearing lower limb exercise equipment. The equipment was designed so that the foot plates moved downward along with the inclining support rod. Therefore, the distance between the saddle and the foot plate could be kept constant and the subject could exercise without changing the knee joint angle. The subject had to try to balance the center-of-gravity shifts caused by the support rod that repetitively inclined alternatively on the left or right side, thus being more heavily loaded in the lower limb on the inclining side of the rod. The exercise intensity could be changed by altering the inclining movement cycle.