A noise suppression method for a totem pole power factor correction, PFC, circuit, wherein the method is performed by a controller and comprises: sampling an alternating current at an input end of the totem pole PFC circuit; sending a control signal to a third switch or a fourth switch when it is determined that a voltage of the alternating current at the input end is switched at zero crossing, wherein zero-cross switching means that the voltage of the alternating current switches from a positive half cycle to a negative half cycle or from a negative half cycle to a positive half cycle, the third switch is a switch that enables a PFC inductor in the totem pole PFC circuit to charge or discharge when the voltage of the alternating current is in the negative half cycle, the fourth switch is a switch that enables the PFC inductor to charge or discharge when the voltage of the alternating current is in the positive half cycle, the control signal is used to enable the third switch or the fourth switch to be in an on state; and characterised in that the method comprises: stopping sending the control signal to the third switch or the fourth switch after the switch is on for a first set period of time, wherein the first set period of time is a voltage stabilization time of bridges of the third switch and the fourth switch; and sending the control signal to the third switch or the fourth switch after the switch is off for a second set period of time, wherein the second set period of time is a dead time between turn-on time and turn-off time of the third switch and the fourth switch. sampling an alternating current at an input end of the totem pole PFC circuit; sending a control signal to a third switch or a fourth switch when it is determined that a voltage of the alternating current at the input end is switched at zero crossing, wherein zero-cross switching means that the voltage of the alternating current switches from a positive half cycle to a negative half cycle or from a negative half cycle to a positive half cycle, the third switch is a switch that enables a PFC inductor in the totem pole PFC circuit to charge or discharge when the voltage of the alternating current is in the negative half cycle, the fourth switch is a switch that enables the PFC inductor to charge or discharge when the voltage of the alternating current is in the positive half cycle, the control signal is used to enable the third switch or the fourth switch to be in an on state; and characterised in that the method comprises: stopping sending the control signal to the third switch or the fourth switch after the switch is on for a first set period of time, wherein the first set period of time is a voltage stabilization time of bridges of the third switch and the fourth switch; and sending the control signal to the third switch or the fourth switch after the switch is off for a second set period of time, wherein the second set period of time is a dead time between turn-on time and turn-off time of the third switch and the fourth switch. stopping sending the control signal to the third switch or the fourth switch after the switch is on for a first set period of time, wherein the first set period of time is a voltage stabilization time of bridges of the third switch and the fourth switch; and sending the control signal to the third switch or the fourth switch after the switch is off for a second set period of time, wherein the second set period of time is a dead time between turn-on time and turn-off time of the third switch and the fourth switch.