To increase a containing space without dead space due to a duct without short-circuit of cold gas for cooling a storage chamber by providing through holes at a cold air suction port of a cooling unit and the storage chamber corresponding to the ports.

A cooling unit has a cooling chamber 27 having a cooler 29, a blower 30 for the cooler, a cold air suction port 31 and a cold air outlet 32, and a machine room having a compressor, a radiator and a blower for the radiator and covered with a machine room cover. Through holes 36, 37 are provided corresponding to the port 31 and outlet 32 of the unit at an upper surface of a storage chamber 21, and an air suction hole and an air outlet of the cover are provided at upper and side and front and back surfaces. The cooling unit is disposed front of the door side of the chamber, and the machine room is disposed rear. Thus, a containing space of the refrigerator can be increased, and an installing space of the refrigerator can be reduced.