Salt, as a common seasoning in our daily life, many mothers will add it to make the meal more flavorful when cooking, but too much salt for babies can cause certain hazards. Too much salt for babies will increase the burden of kidney metabolism, affecting the health of kidney function, and also increase the burden on the heart, causing edema, hypertension, etc. Eating too much salt also makes the baby easy to catch a cold. There are also studies that show that the higher the concentration of sodium in the blood of children, the shorter they are; the more salt intake, the worse the absorption of calcium. Therefore, new parents should not rush to give salt to their babies. The amount of salt needed by babies is gradually increasing, and the daily amount of salt should not exceed 1 gram for babies under one year old, and the smaller the age, the less the amount should be. However, the word “salt” here refers to sodium chloride. Generally, breast milk and formula milk contain sodium Na+, so there is no need to add salt separately for babies within 6 months of age. For infants within 1 year of age who begin to add complementary foods, there is no need to add additional salt to complementary foods because the salt present in natural foods can already meet the needs of babies. 2 years of age and older babies gradually eat with adults, should pay attention to the taste of cooking lighter.