Most of mass rapid transit systems were built by underground structures. For the study of anti-corrosion, the corrosions of the concrete and steel particularly need to be concentrated inside of underground structures. On the other hand, the mass rapid transit systems usually use the type of non-earth system for the traction power supply but the part of current will be leaked out from the track bed of the railway and then forms stray current. It may also be caused the corrosion of steel and earth system inside of underground structures. Therefore, the performance of anticorrosion is more important in the underground structures. The study is aimed at there commendations of the anti-corrosion for the concrete, steel and earth system, respectively. It is also hoped that the anti-corrosion approaches could be implemented to effectively control corrosion.