An electrical control device detection circuit, wherein the detection circuit is configured to detect a drive circuit of an electrical control device, the drive circuit of the electrical control device comprises a drive power module and a high-side switch unit, the drive power module is connected to a first end of the electrical control device by the high-side switch unit, and a second end of the electrical control device is grounded; the detection circuit comprises a first detection module and a control module; a first end of the first detection module is connectable to the first end of the electrical control device, and a second end of the first detection module is connectable to the second end of the electrical control device, and a third end of the first detection module is connectable to the control module; and the control module is configured to obtain a first electrical signal at the third end of the first detection module; and determine, based on the first electrical signal at the third end of the first detection module, whether a fault occurs in the drive circuit of the electrical control device, the electrical control device detection circuit being characterised in that the detection circuit further comprises a detection power module, a switch module, and a second detection module; the detection power module is connectable to the first end of the electrical control device by the switch module, a first end of the second detection module is connectable to the first end of the electrical control device, and a second end of the second detection module is connected to the control module; and the switch module is connected to the control module; wherein the first detection module comprises: a first power submodule, a filter submodule, a first current-limiting submodule, and a switch element; a first end of the switch element serves as the first end (Al) of the first detection module, and a second end of the switch element serves as the second end of the first detection module; and a third end of the switch element is connected to the first power submodule by the first current-limiting submodule, a fourth end of the switch element is connected to a first end of the filter submodule, a second end of the filter submodule is grounded, and a third end of the filter submodule serves as the third end of the first detection module; wherein the second detection module comprises a second power submodule, a second current-limiting submodule, and a switch transistor, the second power submodule is connected to a first end of the switch transistor by the second current-limiting submodule, a second end of the switch transistor is grounded, a control end of the switch transistor serves as the first end of the second detection module, and the first end of the switch transistor serves as the second end of the second detection module. the detection circuit comprises a first detection module and a control module; a first end of the first detection module is connectable to the first end of the electrical control device, and a second end of the first detection module is connectable to the second end of the electrical control device, and a third end of the first detection module is connectable to the control module; and the control module is configured to obtain a first electrical signal at the third end of the first detection module; and determine, based on the first electrical signal at the third end of the first detection module, whether a fault occurs in the drive circuit of the electrical control device, the electrical control device detection circuit being characterised in that the detection circuit further comprises a detection power module, a switch module, and a second detection module; the detection power module is connectable to the first end of the electrical control device by the switch module, a first end of the second detection module is connectable to the first end of the electrical control device, and a second end of the second detection module is connected to the control module; and the switch module is connected to the control module; wherein the first detection module comprises: a first power submodule, a filter submodule, a first current-limiting submodule, and a switch element; a first end of the switch element serves as the first end (Al) of the first detection module, and a second end of the switch element serves as the second end of the first detection module; and a third end of the switch element is connected to the first power submodule by the first current-limiting submodule, a fourth end of the switch element is connected to a first end of the filter submodule, a second end of the filter submodule is grounded, and a third end of the filter submodule serves as the third end of the first detection module; wherein the second detection module comprises a second power submodule, a second current-limiting submodule, and a switch transistor, the second power submodule is connected to a first end of the switch transistor by the second current-limiting submodule, a second end of the switch transistor is grounded, a control end of the switch transistor serves as the first end of the second detection module, and the first end of the switch transistor serves as the second end of the second detection module.