Transfer influence factors can lay the foundation of transfer system planning and management which are important sections of public transit. A mobile terminal which provided a fast and efficient vector to collect transfer data was developed. Taking Beijing as a case study, the influence factors of representative transfer manners were divided into planning and design, operations management and passenger perceptions. The influence factors of bus-bus were transfer times, delay time and transfer organization. Moreover, the influence factors of bus-subway were transfer distance, transfer congestion level and load rate. The research provided a theoretical support for evaluating and optimizing transfer system of public traffic.