According to the Chinese Dietary Guidelines for Pregnant and Breastfeeding Women and Children 0-6 years old, it is recommended that babies within one year of age do not need extra salt. Because the diet of infants within 0-6 months is mainly breast milk or formula, which contains enough sodium to meet the needs of infants, babies should eat salt no earlier than one year of age. 1-3 year old babies need 700mg of sodium per day, which is about 1.75g of salt, and the demand for salt will gradually increase with age. At present, the diet of our families generally contains excessive salt, so parents must pay attention to reduce the salt content when preparing meals for their children. If the diet contains high salt content, in the long run it will lead to a decrease in the secretion of saliva in the baby’s mouth, which is conducive to the presence of various bacteria and viruses in the upper respiratory tract. It can also inhibit the reproduction of oral mucosal epithelial cells, making them lose their ability to resist disease. At the same time, it will affect the absorption of zinc in children’s bodies, leading to zinc deficiency in children. Moreover, pediatric kidneys are not well developed enough to penetrate too much salt. If too much salt is added to complementary foods, it will aggravate the burden on the baby’s kidneys and at the same time increase the burden on the heart, thus impairing the function of the kidneys and the heart. If the child suffers from heart disease, nephritis or respiratory infections, etc., should strictly control the amount of salt intake in the diet, can be used “meal time salt” method, that is, in the dishes when the pot less salt or no salt, to be cooked dishes and then put a small amount of salt.