The invention provides a method for controlling the electric door opening of a microwave oven. The method comprises the following steps of: a detection step: detecting whether a switch key positioned on the microwave oven is operated or not; a recording step: when the switch key is operated, operating a motor, and recording the initial states of a door switch and a door motor switch of an oven door; an acquisition step: acquiring and recording the real-time state of the door motor switch of the microwave oven according to a predetermined time interval; a comparison step: comparing the currently acquired first door motor switch state of the door motor switch with the last acquired second door motor switch state of the door motor switch to obtain a comparison result; a judgment step: judging whether the oven door is normally opened or not according to the initial state of the door switch and the comparison result. Correspondingly, the invention also provides a device for controlling the electric door opening of the microwave oven. According to the technical scheme, the automatic door opening of the microwave oven can be realized according to key operation, in such a way, the convenience for use of users is increased, and the level of a product is enhanced.