The invention discloses a limb auxiliary supporting device for the obstetrics and gynecology department, and belongs to the technical field of medical instruments. According to the technical scheme, the limb auxiliary supporting device for the obstetrics and gynecology department comprises a support body, a moving base is arranged on the lower side of the support body, moving legs are arranged onthe lower side of the moving base, moving wheels are arranged on the lower sides of the moving legs, moving brakes are arranged above the moving wheels, a hydraulic lifting driver is arranged on the upper side of the moving base, and the hydraulic lifting driver is fixed to the moving base through a driver fixing base. The device has the advantages that the structure is simple, use is convenient,the legs of a patient in the obstetrics and gynecology department can be effectively supported and trained, smooth blood circulation is promoted, limb edema is prevented, and the workload of medical workers is relieved.