The invention discloses preventive vision improvement type negative ion anti-blue light glasses comprising glasses legs, connecting legs, glasses frame connecting legs, blue lenses, a glasses frame connecting frame, nose pads and glasses frames, the blue lenses are clamped in the glasses frames, rubber pads are arranged on the upper ends of limit plates at connection parts of the connecting legs and the glasses frame connecting legs to prevent the connecting legs from being severely worn due to direct contact of the connecting legs and the glasses frame connecting legs when the connecting legsrotates on the glasses frame connecting legs, the service life of the preventive vision improvement type negative ion anti-blue light glasses is increased, the number of the glasses frames is two, the two glasses frames are connected to each other through the glasses frame connecting frame, the glasses legs, the connecting legs, the glasses frame connecting legs, the blue lenses, the glasses frame connecting frame, the nose pads and the glasses frames together constitute the glasses, the glasses is easy to disassemble and replace separately, has low cost of use, and has good effects of correction, rectification, prevention, recovery, improvement, vision stabilization and control of eye diseases such as cataracts, glaucoma, muscae volitantes, rhinitis, vertigo, migraine, and visual fatigue.