In terms of the safety and reliability of the intelligent door lock, a gear motor is implanted in the lock cylinder system to ensure the reliability of unlocking, the unlocking speed and the safety of the door lock, and the service life of the lock cylinder is long. In the smart home door lock motor control system, the door lock gear motor can directly cooperate with the lock cylinder in the lock cylinder system to form the smart lock control panel behind the system. Special defense measures have been taken in the aspect of anti electromagnetic interference. Through the test of different power electromagnetic interference and various failure analysis solutions, anti-interference and anti magnetism can be realized. The short circuit of the smart door lock will not be broken and will not be a stranger Strangers open the door.