WHO recommends that babies be exclusively breastfed for the first 6 months of life, and from 4-6 months of age onwards, supplemental foods are added to meet their nutritional needs for growth and development on top of continued breastfeeding. And from the baby began to add complementary foods, many parents think that babies do not love to eat complementary foods because they do not taste, not good, and began to struggle whether the baby should eat salt, and in fact, we are using the taste of adults to measure the child’s palate, the adult taste habits imposed on the baby. So when do babies need to start eating salt? How much is the right amount to eat? The answer is that infants and toddlers do not need to take extra salt. Studies have shown that excessive sodium intake is closely associated with high blood pressure and heart disease in adults. The effect of lowering blood pressure is more pronounced when adult sodium intake drops below 2000mg per day. Therefore, WHO currently recommends that the daily sodium intake of adults should not exceed 2000mg (equivalent to 5g of table salt i.e. not more than 1 beer cap per day). The kidneys, liver and other organs of infants and children are not yet mature, so excessive sodium intake may increase the burden on the kidneys. According to the Dietary Guidelines for Chinese Residents, infants are not recommended to eat food containing salt up to 1 year old. For infants aged 6-12 months, they need 350 mg of sodium per day, and for toddlers aged 1-3 years, they need 700 mg of sodium per day (equivalent to 1.8 g of table salt). milk and other complementary foods contain the sodium needed by the human body, and in general, babies who eat normally are fully capable of consuming enough sodium to meet their physiological needs. children aged 4-6 years need about 900 mg of sodium per day (equivalent to 2.3 grams of salt), in addition to the sodium contained in the food itself, the portion of sodium that must be obtained through salt is only 1-2 grams of salt; the amount of salt for children over 6 years old is best controlled at 3-5 grams. Therefore, in the feeding of infants and young children, please do not add salt until the age of 3. This will allow babies to better experience the taste of natural foods and reduce the incidence of hypertension and cardiovascular diseases later in life.