Pressure-controlled soybean milk machine with limit valve

A pressure-controlled soybean milk machine provided with a limit valve comprises a cover assembly, a pressure sensor, the pressure-limiting valve, a sub-data connector, a mother data connector and a main machine, the cover assembly comprises a cover body and an inner cover, and the main machine comprises a cup body with an upper opening, an electric heating disc, a shell part, a base, a knife assembly, a motor, a motor seat frame and a main control board. A handle on the shell part is hollow, the top is provided with a guide groove and a female joint cavity, and the lower end is communicated with the shell part; the pressure sensor is arranged on the inner cover, the sub-data connector is arranged in the sub-connector cavity, a plug-in terminal piece of the sub-data connector extends out of the notch, and the pressure limiting valve is arranged on the cover assembly. The female data connector is arranged in the female connector cavity, and the insertion groove part extends into the guide groove and is communi