皮蛋又称松花蛋。由于皮蛋的腌制原料中有氧化铅或铅盐，因而腌好的皮蛋内含有少许铅。铅是对人体有害的金属之一，长期摄入对神经系统、循环系统和消化系统会造成明显的危害。儿童对铅尤为敏感，吸收率高达５０％，加上儿童神经系统尚未发育成熟，更容易受铅毒损害，影响智力 Egg also known as preserved eggs. As preserved preserved eggs in raw materials lead or lead salts, which preserved eggs contain a little lead. Lead is one of the metals that are harmful to the human body. Long-term intake can cause significant damage to the nervous system, circulatory system, and digestive system. Children are particularly sensitive to lead, up to 50% absorption rate, coupled with the child’s nervous system has not yet mature, more susceptible to lead poisoning, affecting intelligence