重金属对环境污染和毒性是与其化学结构和性质密切相关。重金属中毒在人体内发生的主要反应,是重金属与各类具有活性蛋白质、酶等的反应而引起的。重金属对人们健康影响很大——疾病、致癌、死亡,所以要掌握重金属元素在使用过程中的转移和污染动向以及医治中毒机理,主动积极地与有害元素作长期斗争. The environmental pollution and toxicity of heavy metals are closely related to their chemical structure and properties. The main reaction of heavy metal poisoning in the human body is caused by reactions of heavy metals with various types of active proteins and enzymes. Heavy metals have a great impact on people’s health - disease, carcinogenesis, and death. Therefore, we must master the transfer of heavy metal elements in the process of use and pollution trends and the mechanism of healing poisoning, and actively fight long-term struggle against harmful elements.