Whether a child needs lead excretion can be judged according to the results of blood lead examination, and medication is recommended for lead excretion if the blood lead is ≥45ug/dl. If the child’s venous blood lead ≥45ug/dl, need to use the chelating agent under the guidance of the doctor to eliminate lead treatment, and at the same time improve the blood routine, urine routine, liver and kidney function tests, as well as whether there is iron deficiency. If the child’s venous blood lead ≥ 70ug/dl, should be immediately hospitalized for lead elimination treatment, commonly used drugs include calcium disodium edetate, and if necessary, should be carried out living environment examination and intervention. If necessary, the living environment should be examined and intervention should be carried out. In general, it is important to keep children away from the lead environment and do blood lead screening regularly for early detection and early treatment. The above drugs should be used under the guidance of a doctor.