PURPOSE: To enable execution of heating and refrigerating cooking by a method wherein a microwave oven and a refrigerating device form a separate type unit, and the second shaft of an impeller is engaged with a first shaft for rotating a turn table.

CONSTITUTION: A refrigerating device 16 is joined with a microwave oven 15 to form a unit, the refrigerating part except the part of the vaporizer of the refrigerating device forms a separate type unit, and a compressor the weight of which is heavy is separated to reduce the weight of a body. When heating is effected as the function of the microwave range 15, a motor 4 is run, a turn table 8 at a bottom 23 of the interior of a chamber is rotated by means of gears 5 and 6, and electric waves are applied on a substance 10' to be heated to heat it. In this case, the bottom of the turn table 8 makes contact with the bottom 23 of the interior of the chamber to prevent overheat of fleon gas in the internal system of a vaporizer 21 of the refrigerating device 16. When ice cream during refrigeration is made, the turn table 8 is removed, and a substance-to-be-cooled container 10 is used. Freon gas is heat-exchanged with the substance-to-be-cooled container 10 at the part of a plate 22 of the vaporizer 21 to cool the interior of the container 10. Meanwhile, the motor 4 is started to run, and an impeller 12 is rotated through shafts B14 and A13.