A control method for a refrigerator, the control method comprising: - sensing a temperature in each of a plurality of cooling compartments; - determining an operating mode by determining whether the temperature in each of the plurality of cooling compartments is within a respective preset temperature zone; and - controlling a refrigeration cycle device according to the determined operating mode to make the temperature in each of the plurality of cooling compartments within the respective preset temperature zone, - distributing by a distribution device a refrigerant compressed by a compressor and condensed by a condenser into a first refrigerant passage and a second refrigerant passage, wherein a first cold air generating unit includes a first evaporator and a first fan which are mounted in the first refrigerating compartment, and a second evaporator and a second fan which are mounted in the second refrigerating compartment, and a second cold air generating unit includes a third evaporator and a third fan which are mounted in the freezing compartment, so that cold air of respectively different temperature zones is generated, characterized by - connecting the first refrigerant passage and the second refrigerant passage through a connecting device, so that the refrigerant can flow selectively there through, wherein the connecting device comprises a connecting pipe that connects a downstream side of the second evaporator in the first refrigerant passage and an upstream side of the at least one evaporator in the second refrigerant passage, and a control valve mounted in the connecting pipe that controls a flow of the refrigerant in such a manner that according to the opening and closing of the control valve, the first cold air generating unit and the second cold air generating unit are connected to each other selectively in series and in parallel. - sensing a temperature in each of a plurality of cooling compartments; - determining an operating mode by determining whether the temperature in each of the plurality of cooling compartments is within a respective preset temperature zone; and - controlling a refrigeration cycle device according to the determined operating mode to make the temperature in each of the plurality of cooling compartments within the respective preset temperature zone, - distributing by a distribution device a refrigerant compressed by a compressor and condensed by a condenser into a first refrigerant passage and a second refrigerant passage, wherein a first cold air generating unit includes a first evaporator and a first fan which are mounted in the first refrigerating compartment, and a second evaporator and a second fan which are mounted in the second refrigerating compartment, and a second cold air generating unit includes a third evaporator and a third fan which are mounted in the freezing compartment, so that cold air of respectively different temperature zones is generated, - connecting the first refrigerant passage and the second refrigerant passage through a connecting device, so that the refrigerant can flow selectively there through, wherein the connecting device comprises a connecting pipe that connects a downstream side of the second evaporator in the first refrigerant passage and an upstream side of the at least one evaporator in the second refrigerant passage, and a control valve mounted in the connecting pipe that controls a flow of the refrigerant in such a manner that according to the opening and closing of the control valve, the first cold air generating unit and the second cold air generating unit are connected to each other selectively in series and in parallel.