Method for preparing soybean milk

An embodiment of the invention discloses a method for preparing soybean milk. The method comprises the following steps of controlling a pulverizing motor of a soybean milk maker to drive a pulverizator of the soybean milk maker to directly pulverize a soybean milk processing material so as to obtain raw soybean milk; heating and boiling out the raw soybean milk; and blending the raw soybean milk by using a blender in a barrel in a process of heating and boiling out the raw soybean milk under the condition that P/V2 is greater than or equal to 0.008 watt*minute/revolution and is smaller than or equal to 2.2 watts*minute/revolution, and P is equivalent heating power of a heater of the soybean milk maker in the process of heating and boiling out the raw soybean milk. According to the method for preparing the soybean milk in the embodiment, preparation efficiency of the soybean milk is improved, preparation concentration of the soybean milk is greatly increased, and the service life of the motor is prolonged.