Abstract:Amino acid iodized salt is a new type of nutritious salt，and its reduction does not reduce the salty advantage to meet the current trend of reducing salt and maintaining health.The method utilized potassium ferrocyanide and zinc acetate as a precipitating agent to remove amino acids in the amino acid iodized salt，and the iodine content accurately by redox titration method to solve the problem of serious low iodine detection value in amino acid iodized salt detection detected.The results indicated that the method had high accuracy，good precision and repeatability，and with low equipment requirement and apparatus was easy to operate，which was suitable for application and popularization in enterprises and most testing institutions.