The invention discloses a heating cup assembly and a soybean milk machine. The heating cup assembly comprises an inner cover and a heating cup. The inner cover is arranged inside the heating cup, the inner surface of the inner cover defines a condensation cavity, the condensation cavity is communicated with the ambient atmosphere, and the external surface of the inner cover and the inner surface of the heating cup form a heating cavity. The inner cover is provided with a through hole penetrating through the external surface and the inner surface, the through hole is used for communicating the heating cavity with the condensation cavity, so that foam formed in the heating process of an object to be heated in the heating cavity can pass through the through hole to enter the condensation cavity for condensation, and a liquid formed by condensation flows back to the heating cavity. When soybean milk juice is heated to produce foam and the foam fills in the heating cavity, the foam is increased continuously and enters the condensation cavity through the through hole for condensation, the liquid formed by condensation flows back to the heating cavity through a backflow cavity, so that a large amount of foam is not easy to produce in the heating cavity, the soybean milk can be heated continuously, and foam can not overflow. The heating efficiency is increased, and the manufacturing efficiency of soybean milk is effectively increased.