A method and a device for cooling the inside of a vehicle capable of easily providing a heat storage and a cooling in the vehicle, particularly in a car, with the minimum power consumption, and eliminating the idling of an engine required for cooling when the car stops, the method characterized by comprising the steps of storing heat by making ice in the passenger by utilizing surplus power, and operating a blower fan after the engine is stopped to lead the cooled air into a duct cooled by the ice from the outside for exchange of heat with the ice so as to cool the inside of the passenger car with cool air discharged from the duct.
