Lower limb fixator

The utility model discloses a lower limb fixator which comprises a fixator body, a fixing groove is downwards formed in the top face of the fixator body, the bottom of the fixing groove is of an arc-shaped structure, a plurality of air bag strips are arranged in the fixing groove, and an observation window is formed in the middle of the fixator body and penetrates through the fixator body. The two sides of the front end of the fixator are respectively provided with a connector, each connector is provided with a connecting pipe, and the tail end of each connecting pipe is fixedly provided with an inflation bag. The fixing groove is formed in the top face of the fixator, the legs can be conveniently placed in the fixing groove, the observation window corresponds to the popliteal fossa of a patient during fixing, the hand can stretch in to touch the pulsation of the popliteal artery and the skin temperature, the blood supply condition of the popliteal fossa can be conveniently observed, the multiple air bag stri