Once lead accumulates in the body, it can be retained for life. Therefore, prevention should be the main focus. The following are simple measures to avoid children’s lead exposure, which parents should physically do. 1.Children lead poisoning: With the rapid economic development, due to industrial pollution, pollution of living environment, especially the pollution of food and children’s products, etc.. According to experts’ dynamic research on children’s blood lead level in different cities and regions in the past 10 years, it is estimated that about 30-40% of children’s blood lead level exceeds the standard, and nearly 100% of children’s blood lead level exceeds the standard in some industrial pollution areas, and even in ordinary urban areas without obvious industrial pollution, about 10-30% of children exceed the standard. The harm of lead poisoning to human body is multifaceted, such as: nervous system, hematopoietic system, digestive system, urinary system, cardiovascular system, reproductive system, skeletal system, endocrine system, immune system and enzyme system. In the clinical treatment of childhood lead poisoning, it is found that children with lead poisoning are often accompanied by calcium, zinc and iron deficiency, which affects the normal growth and development of children. 2.Common causes of childhood lead poisoning: car decoration, car exhaust; house decoration; lead-containing diet; lead-containing toys; battery cells; biting colored crayons and pencils; playing with newspapers. 3.Common manifestations of lead poisoning in children: dizziness, irritability, inattentiveness, hyperactivity, growth retardation, low immunity, motor uncoordination, visual impairment, hearing impairment, slow reflection, decreased academic performance, anorexia, paranoia, heterophagia, anemia, abdominal pain, irritability, aggressive behavior, learning difficulties. 4.Nutritional dietary guidance treatment for lead damage: functional foods to promote lead detoxification reasonable nutritional measures can improve the resistance of all systems of the body, increase the metabolic detoxification ability of the body to toxic substances, reduce the absorption of toxic substances and promote their transformation into non-toxic substances to be excreted out of the body, which is conducive to recovery. The daily diet of children with lead poisoning should be provided with sufficient amount of high-quality protein and amino acids. Because protein, especially protein rich in sulfhydryl amino acids, is beneficial to reduce the concentration of lead in the body and alleviate the symptoms of poisoning. Vitamin supplementation can not only reduce lead absorption and alleviate the symptoms of lead poisoning, but also promote lead excretion by protecting sulfhydryl enzymes involved in the detoxification process. Macromolecular polysaccharide components such as seaweed and dietary fiber can prevent lead absorption. In addition, calcium, zinc, iron, copper, magnesium and selenium have certain antagonistic effects on the toxicity of lead. These nutrients are abundant in dairy products, soy products, fruits and vegetables. The ideal daily meal preparation should include more than 3-5 kinds of vegetables and more than 2-3 kinds of fruits daily life guidance to watch TV, CD, computer and video games as little as possible, preferably less than 2 hours a day. Avoid microwave ovens and cell phones.