With the use of nonlinear lighting equipment increasing, the harmonic problems of civil power supply network is becoming more and more serious. Analysis and simulation research is done in this paper on the driving circuit and working process of several typical lighting equipment, and the harmonics of typical lighting loads are tested. The simulation and test results show that the harmonic current of lighting equipment is so large that results in serious distortion of current waveform in the distribution network, which causes the problems of voltage waveform distortion and neutral line over-current. Finally, specific methods are proposed to solve the lighting harmonics in the civil power system.