Lower limb exercise device

The utility model discloses a lower limb exercise device, relates to medical rehabilitation instrument technical field, including the box body, one side of said box body is provided with two sliding chutes, the inside of two sliding chutes is both slidingly connected with U-shaped block, the inside of U-shaped block is fixedly provided with hydraulic cylinder, one side of U-shaped block is fixedly provided with a slider, the slider is fixedly provided with the hydraulic cylinder, one side of U-shaped block is fixedly provided with the hydraulic cylinder, and the other side of U-shaped block is fixedly provided with the hydraulic cylinder. A sliding plate is fixedly installed on one side of the top of the U-shaped block, the sliding plate is slidably connected with the box body, a rotating shaft is rotatably connected to the interior of the sliding plate, and a rotating plate is fixedly installed on the outer side of the rotating shaft; the fixing device has the advantages that the legs and the feet of a patie