Microwave oven and shell thereof

The utility model relates to a microwave oven and a shell thereof. According to the shell, the guide groove is formed in the mounting area of the top plate, the through hole is formed in the end, close to the top plate, of the side plate, the hole wall of the through hole extends towards the mounting area of the top plate to form the protrusion, and the protrusion abuts against the mounting area. At the moment, the structure of the shell is designed, so that in the assembling process, a certain guiding and positioning effect can be achieved on the protrusion through the guiding groove, namely, a certain guiding and positioning effect is achieved on assembling of the side plate, and the side plate can rapidly reach the position matched with the top plate. When the shell is assembled, the top plate and the side plate can be quickly and preliminarily positioned through the matching effect of the guide groove and the bulge, and then the through hole and the mounting hole can be communicated by finely adjusting th