摘要金属纳米材料已在各领域得到了广泛的应用，然而其存在的潜在风险仍不可忽视。本文就不同金属纳米材料遗传毒作用表现和毒效应机制方面的内容进行了探讨。金属纳米材料经多途径暴露进入机体，通过循环系统在多个脏器分布。金属纳米颗粒主要经胞吞作用进入细胞，在细胞内直接或经代谢后间接损伤遗传物质，影响细胞周期和基因组稳定性，造成基因突变、染色体畸变，甚至令细胞发生死亡或恶性转化。

abstractsAlthough metal nano materials have been widely used in various fields, the potential risks of it still could not be neglected. In this paper, the effects and mechanisms of genotoxicity caused by different nano materials were discussed. Human body can be exposed to metal nano materials through multiple pathways, metals nano follow the blood stream in circulatory system and distribute to organs. Metal nano particles are mainly uptaken into cells by endocytosis,and direct or indirect damages to genes can be induced by these particles after metabolism in cells. These damages would affect the course of cell cycle and the stability of the genome, resulting in gene mutation or chromosome aberration, and even leading to the death or malignant transformation of cells.