A zero-crossing detection circuit, comprising: a zero-crossing judgment module, having a first end and a second end, wherein the first end is connected to a power supply, and the second end is grounded; a photoelectric coupler, connected to the zero-crossing judgment module; an optocoupler driving module, connected to the photoelectric coupler; and an energy storage capacitor, wherein the energy storage capacitor is configured to provide excitation power for the photoelectric coupler and the optocoupler driving module, the zero-crossing detection circuit further comprising a rectification circuit, connected to the energy storage capacitor, characterized in that the zero-crossing detection circuit comprises: a first current-limiting resistor, having two ends connected to the optocoupler driving module and a first interface of an AC main input respectively; a second current-limiting resistor, having two ends connected to the optocoupler driving module and a second interface of the AC main input respectively; a third current-limiting resistor, having two ends connected to the rectification circuit and the second interface of the AC main input respectively; and a fourth current-limiting resistor, having two ends connected to the rectification circuit and the first interface of the AC main input respectively. a zero-crossing judgment module, having a first end and a second end, wherein the first end is connected to a power supply, and the second end is grounded; a photoelectric coupler, connected to the zero-crossing judgment module; an optocoupler driving module, connected to the photoelectric coupler; and an energy storage capacitor, wherein the energy storage capacitor is configured to provide excitation power for the photoelectric coupler and the optocoupler driving module, the zero-crossing detection circuit further comprising a rectification circuit, connected to the energy storage capacitor, characterized in that the zero-crossing detection circuit comprises: a first current-limiting resistor, having two ends connected to the optocoupler driving module and a first interface of an AC main input respectively; a second current-limiting resistor, having two ends connected to the optocoupler driving module and a second interface of the AC main input respectively; a third current-limiting resistor, having two ends connected to the rectification circuit and the second interface of the AC main input respectively; and a fourth current-limiting resistor, having two ends connected to the rectification circuit and the first interface of the AC main input respectively. a first current-limiting resistor, having two ends connected to the optocoupler driving module and a first interface of an AC main input respectively; a second current-limiting resistor, having two ends connected to the optocoupler driving module and a second interface of the AC main input respectively; a third current-limiting resistor, having two ends connected to the rectification circuit and the second interface of the AC main input respectively; and a fourth current-limiting resistor, having two ends connected to the rectification circuit and the first interface of the AC main input respectively.