Taking the transfer between the existing twostory metro station with single pillar and the newlybuilt threestory metro station with two pillars for example, a combination of theoretical analysis and simulation is adopted to achieve a reasonable transferring; and the reasonable transfer mode is decided. And then, simulation analysis of the transfer scheme is carried out based on the passenger flow prediction. The simulation results show that: 1) When the passenger flow is different, different transfer modes should be selected. 4 groups of stairs of 1.2 m upanddown escalators and 1.4 m stairs distributed evenly on the longitudinal direction with the transfer channel through the 2 m width hole along the middle column symmetrically meets the transfer and evacuation requirement by using the single cycle transfer. 2) The traffic capacity of channel (stairs) increases with the width of channel (stairs) increase, but the increasing trend decreases gradually; when the passenger flow is large, the guide should be set to guide the passengers to use the appropriate stair or take the limited flow measures. 3) For Ltyped transfer station, it is more convenient to transfer when the linear arrangement is adopted; and the doublechevrontyped arrangement can cushion the passenger flow better. 4) When the short and long term station construction is carried out at different time, the transfer demand should be taken into account and the engineering conditions for the replacement of the transfer line should be reserved.