Rainproof ventilation plate

The utility model relates to a rainproof ventilation plate. The rainproof ventilation plate comprises a plate body, wherein a plurality of rainproof blades which are distributed in the vertical direction are arranged on the outer side surface of the plate body, and a plurality of through holes are formed on the plate body at the root part of each layer of rainproof blade along the rainproof blade; two side edges and a bottom edge of the outer side surface of the plate body are respectively provided with an edge buckle block, the bottom edge end part of the outer side surface of the plate body is respectively provided with a corner buckle block, an edge buckle gap is formed between the edge buckle block and the plate body, and an L-shaped corner buckle gap is formed between the corner buckle block and the plate body. The rainproof ventilation plate is arranged on the outer side of the window; by adopting the snapping operation of the buckle block, the rainproof ventilation plate is simple to operate and convenient to disassemble and install; by adopting a plurality of blade structures and through holes, the design is reasonable, the rainy water is effectively prevented from entering a room, convenience in window opening ventilation of the house after the decoration can be realized, and a house owner does not need to open the window frequently. After being used, the rainproof ventilation plate can be rapidly disassembled, and the appearance of the building is not influenced.