The present invention relates to a door bolt board structure for microwave oven. Said structure mainly includes several safety switches, door bolt inlet and outlet positioned in upper portion and lower portion of the door bolt board and upper and lower fixing combination sheets. The upper and lower fixing combination sheets can be projected toward left side, formed on the upper portion and lower portion of door bolt board and respectively fixedly combined on the upper top plate and lower side plate of right side of oven cavity body; Said structure also includes several safety switches, door bolt outlet and inlet positioned in upper portion and lower portion of door bolt board and upper and lower fixing combination sheets and oven lamp fixing combination portion which is projected backwards and formed and fixed on the upper side of door bolt board. Said invention can fix and combine the door bolt board on the oven cavity body, and can effectively prevent error operation of safety switch and leakage of electromagnetic wave. |