Microwave shielding structure

The invention discloses a microwave shielding structure which comprises a base and a fastener. The base at least comprises a through hole penetrating through the upper side surface and the lower sidesurface of the base; the fastener comprises a cap body and a rod body which are combined and fixed together, and the rod body penetrates through and is fixed in the through hole; an anti-launder structure is formed between the cap body and the base; the cap body is provided with a first groove which is formed by inwards sinking around the outer surface of the side wall of the cap body by a circle;a gap is reserved between the base and the cap body; the base is provided with a second groove which is formed in the mode that the second groove surrounds the outer surface of the side wall of the base by a circle and sinks inwards; and the first groove, the second groove and the gap form the anti-launder structure together. By the adoption of the microwave shielding structure, microwaves at theopening of a microwave rot