A microwave oven is provide, which is capable of steaming food and cooking
food by direct-irradiation of microwaves at a same time, and is capable of
keeping a cooking cavity clean. A water container is arranged at an upper
portion of the cooking cavity to generate steam from water contained in
the water container when the water is heated by the microwaves. A water
supplying guide and a steaming container are arranged at an upper portion
of the housing. The steaming container comprises a body and a lid. A food
supporting tray with a plurality of steam holes formed therethrough is
placed in the body of the steaming container such that the food to be
cooked is placed on the food supporting tray. Steam holes formed on a
bottom surface of the body are bored in lugs upwardly projected from the
bottom surface, and are arranged so as to be eccentric from the plurality
of steam holes of the food supporting tray. Thus, water and oil produced
from the food placed on the food supporting tray pass through the
plurality of steam holes of the food supporting tray and are collected on
the bottom surface of the body.