The front technologies: Linear motor drive technology, unmanned driving technology, and MCS technology, are all advanced technologies of rail transit fields in the world at present. These technologies are applied in some systems such as the subway, the urban light railway, the suburban railway, the high-speed passenger transportation and the heavy freight, which will improve automatic level and bring much more economic utility into rail transit system. So the concepts of those front technologies are introduced, and the work principles are discussed. The purpose is to strengthening people's knowledge of these new technologies and promoting the development of urban rail transit in our country.