Based on the increasingly strict environmental protection requirements,this paper analyzes the factors affecting the painting process of rail transit vehicles.It is put forward that we should speed up the research and development of new coatings,promote the application of new coating technology and improve the intelligent digital level of painting site management.The development and trends of painting in the future are prospected,which can provide reference for building a green,efficient,energy-saving,safe and reliable painting process for rail transit vehicles.