In order to analyze the existing problems of urban rail transit connection in the legal system and system mechanism , the development status in technology and practice were summarized. It proved that there are four problems in the legal system and mechanism of rail transit connection.The cause of the problems is the lack of standardized and standardized management system, which needs to be improved in terms of legal system and system mechanism. The authors put forward ten management suggestions and implementation of security recommendations, which are helpful to solve the problems. The management suggestions involves planning, construction and operation. It is hoped that the suggestions can provide reference for other cities.