Outer wall structure for museum

The utility model relates to an exterior wall structure for museums, the exterior wall structure comprises an interior wall body, a thermal insulation layer, a keel layer and an exterior wall panel which are sequentially arranged from inside to outside, the keel layer comprises a transverse keel and a vertical keel, and the transverse keel comprises a connecting part, a first convex part and a second convex part. The external wall panel is hung on the transverse keel through the hanging structure; the hanging structure comprises a first hanging piece and a second hanging piece, the first hanging piece is hung on the first convex part, and the second hanging piece is hung on the second convex part. The upper side edge of the external wall panel is fixed to the first hanging piece, the lower side edge of the external wall panel is fixed to the second hanging piece, and the external wall panel is an aluminum-zinc-plated steel plate with the surface coated with a fluorocarbon coating in a roller mode. The externa