A wireless control switch, comprising: a control module having a wireless communication function, two connection terminals, at least one switch module arranged between the two connection terminals, and an independent power supply for supplying power to the control module, wherein the independent power supply is a rechargeable battery or a battery case composed of disposable dry batteries, each switch module comprises a relay and a mechanical switch, a control terminal of the relay is connected to a control pin of the control module, and the mechanical switch comprises a first group of changeover switches and a second group of changeover switches, an open or closed state of the first group of changeover switches are synchronized with an open or closed state of the second group of changeover switches; the first group of changeover switches is configured to control connection and disconnection between the two connection terminals in response to an external operation signal; characterized in that, the mechanical switch is a two-way mechanical switch, the control module is configured to acquire the open or closed state of the first group of changeover switches based on the open or closed state of the second group of changeover switches, and output a relay holding signal to the relay according to the acquired open or closed state and a received wireless control signal; and the relay is configured to control connection or disconnection between the two connection terminals in response to the relay holding signal, wherein the first group of changeover switches comprises a first movable terminal (K1_1), a first fixed terminal and a second fixed terminal, and the relay comprises a relay movable terminal, a first relay fixed terminal and a second relay fixed terminal; the first movable terminal (K1_1) is connected to the relay movable terminal; the first fixed terminal and the first relay fixed terminal are both connected to a first connection terminal of the two connection terminals; and the second fixed terminal and the second relay fixed terminal are both connected to a second connection terminal of the two connection terminals, and wherein the second group of changeover switches comprises a second movable terminal (K1_2), a third fixed terminal and a fourth fixed terminal; and the second movable terminal (K1_2) is connected to a power pin of the independent power supply, the third fixed terminal is connected to a first input pin of the control module, and the fourth fixed terminal is connected to a second input pin of the control module. each switch module comprises a relay and a mechanical switch, a control terminal of the relay is connected to a control pin of the control module, and the mechanical switch comprises a first group of changeover switches and a second group of changeover switches, an open or closed state of the first group of changeover switches are synchronized with an open or closed state of the second group of changeover switches; the first group of changeover switches is configured to control connection and disconnection between the two connection terminals in response to an external operation signal; characterized in that, the mechanical switch is a two-way mechanical switch, the control module is configured to acquire the open or closed state of the first group of changeover switches based on the open or closed state of the second group of changeover switches, and output a relay holding signal to the relay according to the acquired open or closed state and a received wireless control signal; and the relay is configured to control connection or disconnection between the two connection terminals in response to the relay holding signal, wherein the first group of changeover switches comprises a first movable terminal (K1_1), a first fixed terminal and a second fixed terminal, and the relay comprises a relay movable terminal, a first relay fixed terminal and a second relay fixed terminal; the first movable terminal (K1_1) is connected to the relay movable terminal; the first fixed terminal and the first relay fixed terminal are both connected to a first connection terminal of the two connection terminals; and the second fixed terminal and the second relay fixed terminal are both connected to a second connection terminal of the two connection terminals, and wherein the second group of changeover switches comprises a second movable terminal (K1_2), a third fixed terminal and a fourth fixed terminal; and the second movable terminal (K1_2) is connected to a power pin of the independent power supply, the third fixed terminal is connected to a first input pin of the control module, and the fourth fixed terminal is connected to a second input pin of the control module.