The present light-actuated wide voltage range LED lamp driver circuit includes a rectifier module, two LED modules, a detection module, a control module, a light actuated module, an actuator and a main relay. The output terminals of the rectifier module are connected to the detection module and the control module respectively, and the detection module and the two LED modules are respectively connected to the control module. The detection module includes a transistor Q1 and a transistor Q2. In the low voltage range, both of the transistor Q1 and the transistor Q2 are turned off, making the two LED lamp modules connected in parallel; while In the high voltage range, both of the transistor Q1 and the transistor Q2 are turned on, making the two LED lamp modules connected in series.