Green,environmentally friendly,and sustainable development has become a common goal for the development of all humanity.Railway,as a green mode of transport with high capacity,low energy consumption,and minimal pollution,still faces many challenges in construction.This paper conducted a systematic analysis of issues and solutions at all stages of the process of realizing green railways,including planning,design,construction,and operation.The results show that through the whole process and comprehensive green construction involving green planning,green design,green construction,green operation,and establishing a green railway security system for railway construction projects,it is possible to effectively realize the green and sustainable development of railways from the macro to the micro level.The conclusions offer certain referential significance for the study of green railway.