A microwave oven is provided to accurately guide operation order of each function of a manipulation unit by using a guide line. A microwave oven comprises a main body; a door mounted on the main body in such a manner that the door is opened/closed; and an operation panel(40) arranged at one side of the main body, and equipped with a variety of function manipulation units(42). A guide line(60) is formed on the operation panel. The guide line is arranged between the function manipulation units and sequentially emits light in accordance with the operation order of the function manipulation units so as to guide the operation order of the function manipulation units.
