A refrigerator comprising: a body formed at a lower portion thereof with a freezing compartment and formed at an upper portion thereof with a refrigerating compartment; first and second cold air forming parts (12a, 12b) formed in the refrigerating compartment; first and second evaporators (11a, 11b) installed in the first and second cold air forming parts (12a, 12b), respectively; a plurality of doors (30a, 30b, 30c) rotatably installed in the refrigerating compartment and the freezing compartment, respectively; an ice making compartment formed in the door installed in the refrigerating compartment; a cold air inlet/outlet duct having one side connected with the second cold air forming part and an opposite end portion exposed inside an inner wall or to a front surface of the refrigerating compartment; and a connection member installed with a predetermined thickness at one side of the door of the refrigerating compartment to fill a gap between the opposite end portion of the cold air inlet/outlet duct and the ice making compartment when the door is closed, wherein cold air, which is formed inside the second cold air forming part through a heat exchange scheme when the second evaporator of the refrigerating compartment is operated, is guided to the ice making compartment of the door through the cold air inlet/outlet duct and the connection member characterized by a temperature sensor installed at the opposite end portion of the cold air inlet/outlet duct or at a peripheral portion of the connection member to detect an open and closed state of the door such that the cold air leaking to an outside can be controlled. a body formed at a lower portion thereof with a freezing compartment and formed at an upper portion thereof with a refrigerating compartment; first and second cold air forming parts (12a, 12b) formed in the refrigerating compartment; first and second evaporators (11a, 11b) installed in the first and second cold air forming parts (12a, 12b), respectively; a plurality of doors (30a, 30b, 30c) rotatably installed in the refrigerating compartment and the freezing compartment, respectively; an ice making compartment formed in the door installed in the refrigerating compartment; a cold air inlet/outlet duct having one side connected with the second cold air forming part and an opposite end portion exposed inside an inner wall or to a front surface of the refrigerating compartment; and a connection member installed with a predetermined thickness at one side of the door of the refrigerating compartment to fill a gap between the opposite end portion of the cold air inlet/outlet duct and the ice making compartment when the door is closed, wherein cold air, which is formed inside the second cold air forming part through a heat exchange scheme when the second evaporator of the refrigerating compartment is operated, is guided to the ice making compartment of the door through the cold air inlet/outlet duct and the connection member characterized by a temperature sensor installed at the opposite end portion of the cold air inlet/outlet duct or at a peripheral portion of the connection member to detect an open and closed state of the door such that the cold air leaking to an outside can be controlled.