Research conclusions: The design thoughts are offered on air- conditioning system for the platform area of underg round railway passenger station. The optimal analysis of the air amoun,t cold amount and position of the air sender is made by using CFD numerical simulation. The mechanical ventilation is adopted to the track area and the fancoil is used for the travel area of passenger to satisfy the different temperature requirements of the platform area and the track area. It can be as the reference to design of air- conditioning system for the integrated underground railway- subway station.