A water heating pressure cooker comprises a water tank, a heating cavity and a brewing cavity. The volume of the water tank is large, the volume of the heating cavity is small, or the volume of water contained in the water tank and the water, which flows into the heating cavity, of the water tank are identical in volume. The water heating pressure cooker is characterized in that the heating cavity is formed in the lower portion or the lower side portion of the water tank and provided with a water inlet and an exhaust port. The water inlet formed in the heating cavity is connected with the water tank in a communicated mode, the water inlet and the exhaust port control whether to perform water entering and exhausting through opening and closing a water inlet switch or a water valve, and therefore water supplying and exhausting inside the heating cavity are achieved. According to the different arrangements of the exhaust port and the water inlet, different water inlet switches or valves are arranged, the water entering and exhausting functions of the water tank and the heating cavity inside the water heating pressure cooker are achieved, the water in the water tank enters the brewing cavity or a filter net through a hot water spraying opening after being heated through the heating cavity, and the hot water is supplied to a user. The pressure cooker has the advantages of being simple and reasonable in structure, simple in working process, high in efficiency, small in occupied space, low in cost, high in generality and the like.