Improved refrigerator with temperature-variable room

An improved refrigerator with a cool select zone comprises a refrigerating room, a cold room, the cool select zone and a control part. The cool select zone is arranged in the cold room and provided with an air inlet and an air outlet. The refrigerator also comprises an induced duct, one end of which is connected with the refrigerating room and the other end of which is connected with the air inlet of the cool select zone; as well as an air quantity control structure connected with the induced duct. The control method for the refrigerator comprises: when T is more than Ts-0.5, a controller opens an electric air door to lead cooling air and the on-state of an evaporator fan is retained, if the fan stops, the fan is forcedly started to speed up the flow of cooling air and lower the temperature; when T is less than Ts-0.5, the controller closes the electric air door, the fan recovers to the normal operating state for heat preservation. The refrigerator can conveniently set the temperature to satisfy the fresh-keeping requirements of most daily food; moreover, the refrigerator has the advantages of simple structure, high speed of temperature change, wide regulation range, no remaining frost formation, etc..