The invention provides a microwave oven without microwave radiation. The inner side of an oven door is made of microwave reflecting materials which fully shield an opening of an oven cavity; and a transparent or semi-transparent window on the oven door, by which a user can observe the conditions of foods in the oven cavity, are not remained. The oven comprises a microprocessor used for controlling operation of the microwave oven and / or human-machine interaction, a magnetron used for generating microwaves, a wave guide used for guiding the microwaves into the oven cavity, the oven cavity accommodating the food to be cooked, of which at least one side is provided with an opening, the oven door used for fully shielding the opening, an illuminating light source used for supplying enough brightness necessary for taking video pictures, a camera for taking video pictures in the oven cavity, and a display screen used for displaying the video pictures and / or characters and graphic information; moreover, the microwave oven can also have parameterized cooking menus, and can do cooking according to parameters after a user chooses the cooking menu and adjust the parameters of the cooking menu; and the user can customize, import and export the cooking menus.