The invention discloses a fan as well as a screen touch shutdown protection method and protection circuit for the fan. The method comprises the following steps: generating a touch shutdown signal when a screen is touched; controlling first to fourth switching units to be switched off according to the touch shutdown signal; acquiring a voltage zero-passing signal of an alternating-current power supply; and controlling the switching time sequence of the first to fourth switching units according to the voltage zero-passing signal of the alternating-current power supply, so that a phase-changing circuit converts the alternating current output by the alternating-current power supply into direct current and then a motor stops. According to the method, when the motor of the fan runs and a person or an animal touches a screen of the fan, the first to fourth switching units are controlled to provide direct current for the motor, and then the motor quickly stops, so that the person or the animal is prevented from being hurt.