Steering engine zero calibration device

The embodiment of the invention provides a steering engine zero calibration device and a steering engine, the steering engine zero calibration device comprises a potentiometer assembly and a first fastener, and the potentiometer assembly is located at the shaft end of an output shaft of the steering engine and can be fixed to the output shaft of the steering engine through the first fastener; the second fastener is located on the steering engine shell and can fix the steering engine shell and the potentiometer assembly, so that when the first fastener loosens the potentiometer assembly and the steering engine output shaft, the potentiometer assembly is fixed, and the steering engine output shaft can rotate relative to the potentiometer assembly. After the steering engine is assembled, electronic zero position calibration is carried out through the potentiometer assembly, power is cut off after calibration, the first fastener is loosened, the steering engine output shaft and the potentiometer assembly are sepa