The invention discloses a lower-limb recovery exercise traction apparatus which comprises a base, a support device, cover plate devices, a first traction block, a cylinder device, a first positioning device, a connecting device, a second traction block and a second positioning device. The support device comprises a first support column, a second support column, a first support rod, a support shaft and a horizontal plate, the cover plate devices include a first cover plate device and a second cover plate device, the first cover plate device comprises a first spring, a first cover plate and first sponge blocks, a first groove, first through holes and second through holes are formed in the first traction block, a second groove, third through holes and fourth through holes are formed in the second traction block, the cylinder device comprises a cylinder, a first connecting rod, a second connecting rod, a first lug, a second lug and a third lug, and the first positioning device comprises a first positioning block, a third spring, a first positioning rod, a first square block, a first vertical plate and a first fixing frame. The lower-limb recovery exercise traction apparatus has the advantages that the lower-limb recovery exercise traction apparatus is convenient to use, labor can be omitted, and the work intensity of nursing staffs can be relieved.