Many people have I,Fe,Zn,Se and Ca deficiency in our country.In order to solve these problems and meet the market's demands,various salts are developed.This article introduces salt's classification and its individual features.The suitable doses are 0.8%~1.2% for soup dishes and 1.5%~2.0% for stewing dishes.If certain amount of nutritional elements are added into the salt,nutritional salt is formed,such as iodine salt,iron salt,nutritional Ca salt and nutritional riboflavin salt etc.They have different requirements about cooking time,temperature,and dose etc.Special salt is soluble,yet dose not harden easily.By absorbing different matters,special flavor salt can be made,such as Lemon flavor salt,peppery taste salt,sesame flavor salt etc.,which can be used for dishes directly.