The invention provides lower limb rehabilitation equipment loaded on a wheelchair. The lower limb rehabilitation equipment loaded on the wheelchair comprises a chair back mechanism, a chair seat mechanism, a lower limb mechanism, an armrest mechanism and a lifting movement mechanism. According to the chair seat mechanism, a motor pushes an S-shaped support frame, and inclined states of a chair back are optimally switched in an angle range of 90 degrees from a vertical state to a horizontal state by a crank block; the chair seat mechanism is a bearing component of the whole rehabilitation equipment, and is also a mounting base frame of a power device of the equipment; a hip joint, knee joints and ankle joints of the lower limb mechanism cooperatively implement motions of tracks such as a straight line, an arc and a gait under the driving effect of multiple motors; according to the armrest mechanism, a clamping and locking mechanism controls a rectangular folding guard bar consisting ofan armrest supporting rod and an armrest surface rod piece; and by the lifting movement mechanism, the rehabilitation wheelchair has a lifting function and a movement function. The lower limb rehabilitation equipment loaded on the wheelchair is designed according to rehabilitation demands of a rehabilitation patient in different periods, unglamorous rehabilitation training of the patient is fusedinto daily life, the autonomous living capacity of the patient is improved, and scientific and effective rehabilitation training is implemented.