The utility model provides a combination closed subway station ventilating air conditioniner system, including exhaust airway and fresh flue, exhaust airway and fresh flue are respectively through accident fan valve no. 1 and two intercommunication accident wind channels on the accident fan valve, establish the accident fan in the accident wind channel, the accident wind channel is respectively through tunnel valve no. 1 and tunnel valve no. 2 and tunnel no. 1 and two intercommunications in the tunnel, air exhaust house steward and new trend house steward are established to accident wind channel top, air exhaust house steward both ends intercommunications exhaust airway with the exhaust fan returns, new trend house steward both ends intercommunication fresh flue and combined type air conditioner ware, it is equipped with the valve for air exhaust on the house steward to air exhaust, establish the new trend valve on the new trend house steward, respectively through valve no. 1 and two intercommunications on the valve between combined type air conditioner ware and time exhaust fan and the station station room public region. The utility model discloses a cancel traditional piston wind channel, be in the same place the set of interval tunnel ventilation system and station air conditioning system's wind channel, reduce floor area, and accident fan and station air conditioning system equipment set up keep -It -Simple -Control system, the volume of reducing the maintenance work separately.