Lead poisoning may affect the digestive system, the central nervous system, the hematopoietic system, the liver and kidney functions, or the reproductive system, leading to serious sequelae. If the digestive system is affected, it is usually caused by acute poisoning, in which the oral intake of harmful substances containing lead leads to diffuse damage to the digestive tract, and even ulcers, bleeding and other symptoms, which may leave the mucous membrane of the gastrointestinal tract with chronic ulcers, inflammation and other conditions. In addition, if the poisoning is chronic, it may affect the central nervous system, leaving frequent dizziness, headache or memory loss, insomnia, mental decline, etc., and in the case of women, it may affect the reproductive system, resulting in infertility and other conditions.