Electric welding damage to the body mainly includes physical damage and chemical damage. Among the physical damage are: welding can emit strong light, high temperature, resulting in skin redness and stinging, eye pain and tears, and can even damage the lens and the fundus of the eye, causing cataracts, fundus disease. Chemical damage mainly includes: dry welding will emit radioactive elements, manganese, aluminum, lead, nickel and other heavy metals. This leads to pneumoconiosis, lead poisoning, manganese poisoning, dizziness and headache, and memory loss.