A refrigerator having a valve to control the supply of a refrigerant to a plurality of storage chambers and a control method of the same. An opening time rate of the valve is changed based on modes of the storage chambers to control the amount of the refrigerant supplied to the storage chambers, thereby avoiding concentration of the refrigerant in one of the storage chambers and thus preventing refrigerant shortage in the other storage chambers. Also, left and right temperature deviation of each storage chamber is reduced, thereby achieving uniform temperature distribution of each storage chamber.