Lead pollution caused by lead and its compounds in human production and life. Lead can cause pollution in the atmosphere, water and soil environment. Lead mines, lead and copper smelting, steel production, coal, fuel battery production and cement industry, pesticide and lead compounds (such as red lead) production and use of automobile exhaust gas containing lead, is a major source of lead pollution. Lead is a cumulative poison, mainly through the digestive tract and respiratory tract invasion of the human body, accumulate in the liver, kidney, bone, spleen, brain, lead poisoning.