PURPOSE: To eliminate partial overheat, by allowing a relatively large amount of heat in a range burner on the side facing a low-temperature cooking part, making a relatively small amount of heat to generate in a range burner on the side facing a high-temperature cooking part, thereby approximately equalizing the temperature increases on the side of the low-temperature cooking part and the side of the high-temperature cooking part.

CONSTITUTION: A first range burner 2a on the side facing a low-temperature cooking part 3 is made to be a large burner having a relatively large amount of heat. A second range burner 2b on the side of a high-temperature cooking part 4 is made to be a small burner having a relatively small amount of heat. As a result, in the main body of a cooking device 1, temperature increments on the side of the low-temperature cooking part 3 and on the side of the high-temperature cooking part 4 are made approximately equal with each other.