Soybean milk machine and method for detecting whether detachable auxiliary smashing device is mounted on head of soybean milk machine or not

The invention relates to a method for detecting whether a detachable auxiliary smashing device is mounted on a head of a soybean milk machine or not. The method includes a motor working step. A smashing cutter can be driven by a motor of the soybean milk machine to rotate at the motor working step; at the motor working step, the rotational speed of the motor is detected by a control device of the soybean milk machine, the control device keeps a record whenever the rotational speed of the motor exceeds upper limit or lower limit if the rotational speed of the motor continuously and sequentially alternately exceeds upper and lower preset rotational speed limit deviation ranges of milk making programs, exceeding frequencies are accumulated and recorded by the control device, the milk making programs are suspended by the soybean milk machine when accumulated frequencies exceed set values, and users can be prompted by the soybean milk machine to mount the auxiliary smashing device. The method has the advantages that the users can timely mount the auxiliary smashing device, so that soybean milk can continue being made without wastage; the method is low in detection cost and convenient to implement, structural components can be omitted, and accordingly the users do not need to additionally clean the components, and can conveniently clean the soybean milk machine.