Abstract: A cryogenic valve includes a main body which has an opening, a bonnet which is coupled to the main body, a disc which opens or closes the opening, a stem which is placed through the bonnet, and a drive unit which actuates the disc and the stem. A first seat is provided at the position at which the disc comes into contact with the opening, and a second seat is provided at the position at which the disc comes into contact with the bonnet, so that either when the valve is closed or when the valve is completely open, fluid is prevented from being drawn into the bonnet, thus making it possible to replace a packing with a new one even when the system is in operation.