Improving the transfer between urban rail transit and buses is an indispensable part of the priority development strategy for urban public transport. In this study, to effectively evaluate bus and rail transit service levels and quickly discover the shortcomings that exist in the transit system, nine representative evaluation indexes are selected from the four integration aspects of facilities, networks, operations, and ticket prices. Subsequently, a multi-level feeder service structure evaluation index is constructed, and the calculation method of the index weight of each level is elucidated. Finally, the rail transit and bus connection systems in Shenzhen are analyzed. The research improves the index system construction and evaluation method in the public transport feeder service, which is helpful for the public transport authority to formulate relevant service improvement strategies and measures.