The invention provides a medical dressing changing chair which comprises a chair back, a seat, lifting armrests, a pedal plate, a lifting seat, an inflatable pillow, first face plates, second face plates, fourth face plates and universal joints. The chair back and the seat are hinged to each other, the lifting armrests are fixed to two sides of the seat, the pedal plate is hinged to the front side of the seat, the seat can be supported by the lifting seat, and the inflatable pillow is positioned on the chair back; longitudinal through accommodating chambers are formed by the lifting armrests, the first face plates are hinged to the surfaces of the lifting armrests, and the second face plates are hinged into the accommodating chambers; accommodating grooves for accommodating the fourth face plates are formed in the sides of the chair back, and the fourth face plates are movably fixed into the accommodating grooves by the aid of the universal joints. The medical dressing changing chair has the advantages that inclination angles of the chair back can be adjusted as needed, medical instruments and medicines can be arranged on the first face plates positioned at the fronts of patients, the second face plates and the fourth face plates can be used for supporting the arms of the patients, the feet of the patients can be lapped on the pedal plate, the height of the seat and the height of the inflatable pillow can be adjusted as needed, and accordingly the service flexibility and convenience of the medical dressing changing chair can be improved.