Abstract: Objective: In the context of ′stationcity integration′, the RTH (railway passenger transport hub) traffic system needs to consider the dual needs of ′highefficiency hub traffic gathering and distribution′ and ′integrated property and highquality travel′, thus research on RTH is carried out.Method: The general idea for RTH core area traffic design is proposed based on ′stationcity integration′. Taking Beijing Subcenter Station as a study case, the key points of ancillary traffic facility scale, traffic facility layout and regional traffic organization optimization are analyzed.Result & Conclusion: The key technical points of RTH core area traffic design based on ′stationcity integration′ hub are: based on the indicator of passenger volume dispatched per unit, the scale of the hub ancillary facilities is reasonably determined; on the basis of crossclassifying the traffic characteristics of passengers in the hub core area, ′multientry/exit′ for hub core area traffic organization is proposed by setting a ′shared traffic core′; traffic issue in existing hub during operation should be avoided, while the redundancy of the core area transport system capacity and the operational organization flexibility are improved.