Urban (suburban) railways play an indispensable role in commuting in metropolitan area. Combined with the basic function orientation of urban (suburban) railways, this paper analyzes the current situation of urban (suburban) railways in China. While accelerating the construction of urban (suburban) railway in metropolitan area, it analyzes and considers the development of "four-network convergence", system standardized development, sustainable development, the intelligent development and other aspects of urban (suburban) railways.