In the face of global environmental changes and international city planning, a biodiverse and livable environment is the goal for urban and rural planning. Researches have been conducted in fields of sustainability and ecocity, while a vision of ecological town and country is presented. In the pursuit of a sustainable living environment, this study attempted to explore the sustainable ecology of the voided railway of mountain line in Shengxin and Longteng village, Sanyi township, Miaoli County. The research incorporated research methods of evolving data analysis, questionaire survey and GIS.