The utility model discloses a vacuum cleaner for the molding of a miniaturized circuit board. The vacuum cleaner comprises a box body with an opening in the top; a partition plate which divides the box into two parts is arranged in the box body; a plurality of through holes are formed in the partition plate; the bottom of the box body is connected with a vacuum cleaner by a dust sucking pipeline. The vacuum cleaner can suck dust and sundries generated after the molding of the miniaturized circuit board, so the cleanliness of a workshop is greatly improved, the problems that the manual cleaning is low in cleaning efficiency and poor in effect are solved, the production efficiency is improved, and the molding scrappage of the miniaturized circuit board is reduced.