The invention provides an automatic pressure soybean milk machine, and belongs to the technical field of household food cuisine. The machine comprises a machine seat provided inside with a driving motor supplying power, blades arranged at the tail end of a driving shaft of the motor, a cup body, a cup cover arranged above the cup body, a heating element, a temperature detecting device and a circuit board of a control circuit; the cup cover and the mouth of the cup body are provided with sealing elements; under the state of closed cover, a sealed cavity is formed in the cup body, the continuous rise of pressure in the sealed cavity is allowed after heating, and a pressure relief device is also arranged; and air can be discharged by the pressure relief valve when the pressure in the cup body is higher than the preset pressure P0. The temperature for cooking the soybean milk can reach more than 106 DEG C; when the soybean milk is continuously cooked in the sealed cavity, the overflow phenomenon cannot happen so as to shorten the process of cooling the soybean milk and saving time; moreover, the cooked soybean milk is fully emulsified and well cooked; and due to the continuous and quick heating, the loss of the nutrient contents in the food is inhibited in the heating process, so that the cooked soybean milk is fragrant and pure, and tastes good.