Microwave baking pan with fully-enclosed structure

A microwave baking pan with a fully-enclosed structure, comprising an upper baking pan, a lower baking pan, an upper baking pan sheath and a lower baking pan sheath, wherein the outer surface of each of the upper and lower baking pans is provided with a microwave absorption layer, and each of the upper and lower baking pan sheaths comprises a face cover part and an edge cover part;

• each of the upper and lower baking pan sheaths is respectively provided with a fishmouth lifting lug on the front and rear side walls;
• each fishmouth lifting lug is provided with a notch in which an elastic fastener or an L-shaped convex buckle is provided;
• a positioning column is provided inside an arc-shaped protection lug on each of both sides of the fishmouth hanging lug of the upper baking pan sheath;
• and each positioning column is provided with a base part and a protruding part, the protruding part extending into the fishmouth lifting lug of the lower baking pan sheath.