Colloidal gold card shell film covering device

The utility model discloses a colloidal gold card shell film covering device which comprises a rectangular plate, a rectangular groove is formed in the left side of the upper side wall of the rectangular plate, a fixed shaft is fixedly installed on the inner side wall of the rectangular groove, a rotating plate is connected to the outer side wall of the fixed shaft in a sleeved mode, a rectangular cylinder is fixedly installed on the left side wall of the rotating plate, and a movable plate is assembled on the inner side wall of the rectangular cylinder in an inserted mode. A fixed plate is fixedly installed on the left side wall of the movable plate, a vertical plate is fixedly installed on the left side wall of the fixed plate, a glass plate is installed on the upper side wall of the fixed plate in an embedded mode, a cylinder is fixedly installed on the left side of the upper side wall of the glass plate, and a suction cup is installed on the left side wall of the rectangular plate in an embedded mode. The fixing plate, namely the glass plate, can be conveniently covered on the colloidal gold detection card, and meanwhile, the positions of the glass plate and the cylinder can be adjusted according to the size of the detection card, so that the operation and observation are convenient while the protection is realized, and the accuracy of an experimental result is ensured.