Abstract: In view of problems of low illumination, short range, being easy to happen rear-end accident and high electricity consumption existed in incandescent lamp lighting system of mine locomotive, the paper proposed an implementation scheme of integrated LED lighting system of mine locomotive. It introduced design points of LED lighting lamp, circuit of constant-current source, modular inverter and parallel current sharing of mosfet in details. The actual application shows that the system has low electricity consumption and good power saving effect, which eliminates hidden danger in transportation of mine locomotive, solves problems of integration of white illuminator and red tail lamp, separation of high-volage and low-voltage in inverter.