This paper summarized N - Nitrosmine compounds classification and their hemical-physical properties,then discusse their contaminated situation in food industry through their resources and toxicities.

• 综述了N-亚硝胺类化合物的种类及理化性质,以及食品中N-亚硝胺的污染状况、污染来源、毒性与危害和在食品中的限量标准,并探讨了对减少其危害的预防措施。