Abstract: Icing on the contact rail of magnetic levitation line in Changsha city often occurs in winter, causing the line to be out of service. So far, the technical measures and experiences for de-icing of the contact rail of magnetic levitation line are lacking at home and abroad. By analyzing electro-impulse de-icing techniques and according to the characteristics of the maglev contact rail, we put forward two electro-impulse de-icing schemes of the maglev contact rail. At the same time, we developed a power supply device for electro-impulse de-icing and designed a plane impulse coil for de-icing of maglev contact rail. The impact pendulum test shows that the measures, such as increasing the size of the coil, increasing the impulse voltage, reducing the gap between the coil and the target, improving the electrical conductivity of the target, and increasing the eddy current, can increase the impulse force effectively and improve the de-icing efficiency. Moreover, the technical parameters of the deicing device were optimized. Then the simulation test of the artificial climate chamber was carried out. The results show that the electro-impulse technology can remove 15 mm glaze ice in the target area of the contact rail effectively.