Causes of lead poisoning in children include skin contact, ingestion through the digestive tract, inhalation through the respiratory tract, etc., and they should seek medical treatment in time. 1. Skin contact: Children’s skin is thin and tender, so if they use ointments and skin care products that contain more lead, they may enter the body through the skin and cause lead poisoning. 2. Digestive tract intake: lead poisoning can be triggered by licking and eating cosmetics containing more lead on the face of loved ones, nibbling on lead paint on the surface of toys, and consuming lead-contaminated food. 3. Respiratory inhalation: air pollution caused by industrial fumes, automobile exhaust, etc., or family members who are lead-related workers and bring lead-containing utensils without special treatment back to their homes can also lead to lead poisoning caused by children inhaling lead-containing dust. There may also be other causes of lead poisoning in children. It is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.