To provide a cold storage warehouse for holding a temperature therein uniform by reducing a temperature difference between an upper part and a lower part in the warehouse.

The cold storage warehouse 1 having a cooler and a blower 5 including a suction port 5a opened to a lower portion in the warehouse and connected to a discharge port 5b, a supply air duct 6 opened at its end to an upper portion in the warehouse and connected at its end to the port 5b comprises controller 14 for sensing temperatures of upper and lower portions in the warehouse to drive the blower 5 when a temperature difference between the upper and lower portions in the warehouse exceeds a predetermined value and stopping the blower 5 when the difference returns to a predetermined range by the drive of the blower.