Knee joint traction device

The utility model discloses a knee joint traction device which comprises a traction chair and a guide rail seat, the traction chair is installed on the guide rail seat in a sliding mode, an electric telescopic cylinder is arranged on the guide rail seat, the telescopic end of the electric telescopic cylinder is connected with a traction rod through a dynamometer, and a fixing device used for fixing a shank is installed on the traction rod. A mounting plate is arranged on the traction chair, a controller, a liquid crystal display screen, a control button and a power supply device are mounted on the mounting plate, and the liquid crystal display screen, the control button, the power supply device, an electric telescopic cylinder and a dynamometer are electrically connected with the controller, so that knee joints can be better drawn, left leg traction and right leg traction can be conveniently switched, and the traction efficiency is improved. And the traction force can be well reflected, and the use effect is