The present invention provides a door frame structure of microwave oven, and said structure includes oven door frame which can be used as skeleton in the interior of oven door and can be made into rectangular form and first and second right-angle fixing frames which are used for stabilizing and fixing oven door frame end corners and placed on the upper and lower end corners of one side of oven door frame which is correspondent to the rotating centre of oven door, said two right-angle fixing frames can be respectively crossed over two side end edges and upper and lower end edges of upper and lower end corners of one side of oven door frame. Said structure can effectively prevent oven door frame from being warped and can make oven door combination body retain higher stable state and precision. |