Glass wool refers to glass fiber wool, the human body may cause eye diseases, contact dermatitis, lung damage and so on. 1. Eye diseases: long-term contact with glass fiber wool people, the eyes and surrounding tissues may be stimulated by glass fiber wool, can suffer from conjunctivitis and keratitis, severe cases can be seen corneal clouding and local abscess. 2. Contact dermatitis: fiberglass wool is an inorganic non-metallic materials, containing a variety of compounds, allergy-prone people if long-term contact, may lead to contact dermatitis. 3. Lung damage: glass fiber cotton dust may enter the lungs through the respiratory tract, deposition in the lungs, affecting lung function, exposure to glass fiber workers lung biopsy pathology examination showed that the lung tissue with glass fiber dust cell foci, may cause lung cancer; may also stimulate the respiratory tract and coughing and other symptoms, or induced asthma. It is recommended that long-term in the glass fiber cotton environment of the population, pay attention to the correct wear dust masks or masks.