Abstract For the inland transportation systems around the world,the railway transportation seems to be the best choice to reduce pollution and effectively use the energy resources. Due to the long narrow topography and steep mountain ridge,there will be a lot of railway transportation projects proposed in the next 20 years in Taiwan area. An extensive evaluation and investigation is made on the safety strategy against the track deformation induced by the deformation of the civil structure during the design,construction and operation stages. An overall analysis is carried out based on the local practical field experiences and safety and maintenance regulations of other area. The suggestions and conclusions are proposed with the case study result of Taipei MRT system.