The ventilation and air conditioning system of this project adopts the shielded door system program, and the tunnel ventilation system adopts the combined program of tunnel fan frequency conversion and station tunnel exhaust fan. Underground station large system using all-air double-end air supply system, ventilation and air conditioning equipment is set up in the station at both ends of the equipment room. Underground station small system needs air conditioning equipment management room using all-air once the return air fixed air volume system or independent fresh air + fan coiler air - water system.