Cosmetic bag

The utility model discloses a cosmetic bag. The cosmetic bag comprises a cosmetic bag body and an upper cover, four main frame plates, four corner plates, a plurality of long partition plates and a plurality of short partition plates are arranged in the cosmetic bag body; a plurality of insertion holes are formed in the two ends of each main frame plate; the two ends of each corner plate are eachprovided with a plurality of protruding blocks corresponding to the inserting holes in a one-to-one mode. Each main frame plate and each corner plate are detachable through the insertion of each convex block and each insertion hole; a plurality of vertical grooves are formed in the two side faces of each main frame plate, the two side faces of each long partition plate and the two side faces of each short partition plate. Wherein a plurality of grooves are formed in each of the long partition plates and the short partition plates, a certain interval is preset between every two grooves, the grooves are uniformly distri