The treatment of lead poisoning in children is mainly based on blood lead level, and different treatment plans are formulated according to the level of blood lead in children: Blood lead level higher than 700 micrograms/liter, very severe lead poisoning: immediate (emergency) admission to hospital, identification of the source of lead contamination, removal of residual lead contamination sources in the body or lead contamination sources in the environment as soon as possible, followed by administration of dimercaptosuccinic acid, followed by intravenous injection of calcium edetate sodium 2-4 hours later. The combination of the two drugs was used for lead expulsion treatment for 5 days each, and environmental nutritional intervention was required after discharge. Blood lead level 450-699 mcg/L, severe lead poisoning: hospitalization as soon as possible, identification of the source of lead contamination, separation from the source of lead contamination, followed by dithiothiazole or calcium edetate sodium for lead expulsion treatment, each course of treatment for 5 days, environmental and nutritional intervention after discharge; Blood lead level 250-449 mcg/L, moderate lead poisoning: hospitalization at an optional stage, identification of the source of lead contamination, separation from the source of lead contamination, and treatment with dithiothiazole and calcium edetate sodium by an experienced physician. experienced physician, administer lead repellent treatment with dimercaptosuccinic acid or calcium sodium edetate for 5 days each; or give lead repellent treatment after positive lead repellent test. Environmental and nutritional interventions after discharge; Blood lead level 200-249 mcg/L, mild lead poisoning: identify the source of lead contamination, remove lead contamination, conduct behavioral, environmental and nutritional interventions for children, and recheck blood lead level once a month. Above 250 micrograms/liter, lead treatment; below 200 micrograms/liter, blood lead level will be rechecked every 2 months. Again, environmental, behavioral, and nutritional interventions; 100-199 micrograms/liter, hyperleademia: identify the source of lead contamination, remove from lead contamination, or avoid exposure to lead contamination sources, and conduct behavioral, environmental, and nutritional interventions; 50-99 micrograms/liter, excessive blood lead: look for possible high-risk factors for elevated blood lead and remove them, and you can intervene accordingly according to the child’s nutrition, behavior, and other high-risk factors; Blood lead Levels below 50 micrograms/liter, currently acceptable blood lead level: no special treatment is needed, but if there are high-risk factors that cause elevated blood lead levels, bad hand and mouth habits such as chewing fingers and toys should be corrected, washing hands before meals and developing good hygiene habits.