Lead, a neurotropic poison, has no physiological function in human body, and the ideal level of blood lead should be zero; any concentration level of lead is harmful to human body. Experts at home and abroad have conducted a lot of researches around the problem of lead poisoning in children, and agreed that: blood lead level ≥100ug/L, regardless of clinical symptoms, can be diagnosed as high blood lead disorder. The American Academy of Pediatrics reports that blood lead level ≥50ug/L can already affect children’s IQ, so children’s blood lead level should be controlled below the standard of 50ug/L. The lower the lead level in children’s body should be, the better, and the concentration of lead at any level is unsafe. Environmental intervention, health education and proper lead detoxification treatment are the main methods for high blood lead in children. The main content of lead prevention and control Modern life lead pollution is everywhere, according to the monitoring, the air lead content exceeds the standard in China, up to 50% in cities, and up to 80% or more in areas with high motor vehicle traffic. The lead dust in the atmosphere mostly accumulates and floats in the range of 1 meter above the ground, which happens to be the activity and breathing zone of children, so children inhale more lead from the respiratory tract. The main products with high lead content are motor vehicle exhaust, paints, pigments, stationery products, puffed food, lead-containing talcum powder …… The danger of excessive blood lead may cause hyperactivity in children, inattention, memory loss, slow physical growth, poor intelligence, loss of appetite, lack of color, etc. Since most children with mild lead poisoning do not have obvious clinical symptoms, it is not obvious to children. Since most children with mild lead poisoning do not have obvious clinical symptoms, it is more harmful to children insidiously. Lead can seize the calcium, zinc and iron plasma targets, so that their absorption, metabolism and functional activities are hindered, which leads to a series of clinical symptoms of calcium, zinc and iron deficiency such as stunted growth, anorexia and anemia, etc. Without excluding lead, regular calcium, zinc and iron supplementation can hardly be effective. Prevention of lead poisoning in children Poor hygiene habits and improper behaviors of children can make lead enter children’s bodies through respiratory, gastrointestinal and skin channels. The key to prevent lead poisoning in children is to cut off the channels through which lead enters children’s bodies by providing health guidance to parents and children. 1.Educate children to develop the good habit of washing hands regularly, especially before meals is very important. Lead dust in the environment can stain children’s hands when they play and can easily enter their bodies with food or through habitual hand-to-mouth actions, which will cause the increase of lead load for a long time. 2.Pay attention to children’s personal hygiene, cut nails regularly, the nail crevice is especially easy to hide lead dust parts. 3.Wash children’s toys and supplies frequently. 4.Clean the dust in the parts that children can reach with a clean wet rag. Children’s food and tableware should be covered with dust. 5.Don’t take children to walk and play near factories, power plants, gas stations and roads with a lot of traffic. 6.Vehicle drivers, traffic police, sanitation workers and other family members who are engaged in work containing lead must change their work clothes and take a bath after work. Work clothes should not be washed together with children’s clothes. What’s more, they should not breastfeed their children in the lead workplace (or between jobs). 7.Pregnant women and children should try to avoid passive smoking, and families that use coal as fuel should open more windows for ventilation. 8.Shop for children’s tableware should avoid colorful patterns and shoddy products. Do not eat food with high lead content (eggs, popcorn, fried food, canned food and drinks with coloring, etc.). 9.Can’t use tap water that stays in the pipe for a long time to make milk powder and cooking for children. Treatment of lead poisoning in children 1.Chinese herbal medicine for lead expulsion: It is one of the means to treat lead poisoning in children in China at present, and it is suitable for children with mild and moderate lead poisoning and hyperleademia whose blood lead level is below 450ug/L. It is safe, effective and has no obvious adverse reactions. 2.Western medicine for lead expulsion: It is suitable for patients with severe lead poisoning whose blood lead level is above 450ug/L. It is a complicated procedure and may have side effects on human body, and must be treated by doctors in hospital. 3.Auxiliary treatment: Eat more vegetables and fruits, drink more milk, supplement vitamins and trace elements such as calcium and zinc to assist lead expulsion. Take children to regular children’s health hospital for blood lead level test regularly. The development of lead poisoning in children is a slow process, and there is no typical clinical manifestation in the early stage. Early detection of children with hyperleademia through screening and timely intervention can reduce the toxic effects on the child’s organism.