The present invention puts forward the subway tunnel cold air cooling ring control system, the subway tunnel cold air cooling ring control system connects the outside world with the tunnel, which includes air intake device, refrigeration device, air supply device and rail top duct, air supply device connects the air intake device, refrigeration device and rail top duct, air intake device speaks outside air introduction, outside air through the air supply device outside air transported to the refrigeration device inside the refrigeration device cooling, cooling the cold air along the air supply device transported to the rail top duct, so as to realize the effect of cooling to the interval tunnel; wherein, the rail top duct is set up on the top of the tunnel through the entire interval tunnel. The cold air along the air supply device to the top of the rail duct, so as to realize the effect of cooling to the interval tunnel; which, the top of the rail duct is set in the top of the subway tunnel through the entire interval tunnel. This subway tunnel cold air cooling ring control system has the advantages of directly supplying cold to the tunnel and dividing the rail top air duct into two air ducts to cool down the tunnel.