The invention relates to a pregnant woman toileting assisting device for medical treatment, in particular to a pregnant woman toileting assisting device for the medical obstetrics and gynecology department. Through the pregnant woman toileting assisting device for the medical obstetrics and gynecology department, the burden of accompanying personnel can be reduced, and pain discomfort of pregnantwomen is avoided. According to the technical scheme, the pregnant woman toileting assisting device for the medical obstetrics and gynecology department comprises a large U-shaped base, a chair plate,a first supporting plate, a second supporting plate, a third supporting plate, a large lifting plate and the like; and the chair plate is located above the large U-shaped base, and the lower end of the first supporting plate is connected with the front side of the top of the large U-shaped base. According to the pregnant woman toileting assisting device for the medical obstetrics and gynecology department, the shoulders and buttocks of the pregnant women can be lifted up simultaneously, the supporting property is good, pain discomfort of the pregnant women is avoided, the burden of the accompanying personnel can be reduced, and the health and safety of the pregnant women and fetuses are facilitated.