The invention discloses a fixing device for the orthopedics department. The fixing device comprises a base plate, the upper surface of the base plate is provided with a heat-preservation layer, the heat-preservation layer is internally provided with a serpentine tube, the left side of the heat-preservation layer is provided with a water inlet hole, the right side of the heat-preservation layer isprovided with a water outlet hole, the upper surface of the heat-preservation layer is provided with drug bags and air bags separately, the air bags are connected with one another through air pipes, the top of the air bag at the leftmost side is provided with an air inlet pipe, the air inlet pipe is provided with an electromagnetic valve, the right side of the upper surface of the base plate is provided with a fixing block, the lower edge surface of the base plate is sequentially provided with a control box, a heater, a circulating water pump, an air pump and a fixing groove from left to right, a water outlet of the circulating water pump is connected with a water inlet of the heater, a water outlet of the heater is connected with the water inlet hole, and the water outlet hole is connected with a water inlet of the circulating water pump. The fixing device is reasonable in design and compact in structure, when medical staff uses the device for fixing a patient, through the fixation ofthe fixing groove, the fixing block and the air bags, the fixing device does not easily fall off, and the pain of the patient is relieved.