The invention relates to an anti-dry heating soymilk machine and an anhydrous anti-dry heating detecting method, and the anti-dry heating soymilk machine comprises a water level detecting device, a main control chip and a peripheral hardware circuit thereof, wherein the peripheral hardware circuit comprises an anhydrous detecting circuit, and the anhydrous detecting circuit is connected with the water level detecting device, is used for detecting whether water exists in the cup body of the soymilk machine or not, and is characterized in that a fault detecting circuit is also connected in series between the anhydrous detecting circuit and the I/O port of the main control chip. By aiming at the deficiency of the prior art, the invention provides a safe soymilk machine and an anhydrous anti-dry heating detecting method, and the soymilk machine can accurately and reliably detect the faults of a water level detecting circuit and the water level detecting device and ensures the reliability of water level signals input to the main control chip.