A lighting load abnormality detecting device, comprising: - a detecting circuit connectable to a lighting load module, the detecting circuit being configured to detect an abnormal state of the lighting load module; - a power supply module being configured to provide power to the detecting circuit and to the lighting load module; and - a control module being configured to judge whether the lighting load module is abnormal or not according to detection information received from the detecting circuit, characterized in that: the detecting circuit includes a pulse width modulation detecting circuit and a static detecting circuit connected in parallel; wherein the static detecting circuit is configured to provide the detection information to the control module at the beginning of a lighting load abnormality detecting device startup phase, and jointly provide the detection information with the pulse width modulation detection circuit after the lighting load abnormality detecting device start-up phase is completed, wherein the control module comprises a first input end connected to a second terminal of the static detecting circuit, a second input end and a first output end, wherein the pulse width modulation detecting circuit includes: - a field effect transistor comprising a drain connected to a first terminal of the static detecting circuit and connectable to the lighting load module, a source connected to the power supply module and a gate coupled to the first output end of the control module, and - an amplifier (N4B); wherein, after the lighting load abnormality detecting device start-up phase is completed: - the control module is configured to generate a PWM signal at the first output end and to provide the PWM signal to the gate of the field effect transistor, such that the field effect transistor is in a conduction state during an ON state of the PWM signal and in a non-conduction state during an OFF state of the PWM signal; - the amplifier (N4B) is configured to amplify a voltage at the source of the field effect transistor and to provide, as the detection information, the amplified voltage of the source of the field effect transistor to the second input end of the control module. - a detecting circuit connectable to a lighting load module, the detecting circuit being configured to detect an abnormal state of the lighting load module; - a power supply module being configured to provide power to the detecting circuit and to the lighting load module; and - a control module being configured to judge whether the lighting load module is abnormal or not according to detection information received from the detecting circuit, the detecting circuit includes a pulse width modulation detecting circuit and a static detecting circuit connected in parallel; wherein the static detecting circuit is configured to provide the detection information to the control module at the beginning of a lighting load abnormality detecting device startup phase, and jointly provide the detection information with the pulse width modulation detection circuit after the lighting load abnormality detecting device start-up phase is completed, wherein the control module comprises a first input end connected to a second terminal of the static detecting circuit, a second input end and a first output end, wherein the pulse width modulation detecting circuit includes: - a field effect transistor comprising a drain connected to a first terminal of the static detecting circuit and connectable to the lighting load module, a source connected to the power supply module and a gate coupled to the first output end of the control module, and - an amplifier (N4B); - a field effect transistor comprising a drain connected to a first terminal of the static detecting circuit and connectable to the lighting load module, a source connected to the power supply module and a gate coupled to the first output end of the control module, and - an amplifier (N4B); wherein, after the lighting load abnormality detecting device start-up phase is completed: - the control module is configured to generate a PWM signal at the first output end and to provide the PWM signal to the gate of the field effect transistor, such that the field effect transistor is in a conduction state during an ON state of the PWM signal and in a non-conduction state during an OFF state of the PWM signal; - the amplifier (N4B) is configured to amplify a voltage at the source of the field effect transistor and to provide, as the detection information, the amplified voltage of the source of the field effect transistor to the second input end of the control module. - the control module is configured to generate a PWM signal at the first output end and to provide the PWM signal to the gate of the field effect transistor, such that the field effect transistor is in a conduction state during an ON state of the PWM signal and in a non-conduction state during an OFF state of the PWM signal; - the amplifier (N4B) is configured to amplify a voltage at the source of the field effect transistor and to provide, as the detection information, the amplified voltage of the source of the field effect transistor to the second input end of the control module.