Babies eat salt early may aggravate the burden on the kidneys, anorexia, affect respiratory health, etc.. 1. aggravate the burden on the kidneys: the physical development of infants is immature, babies eat salt too early will have a certain impact on the kidneys, aggravate the burden on the kidneys, if you add complementary foods to the baby, it must be light-based. 2. Anorexia: If the baby eats salt too early, the taste is too heavy, may cause the child anorexia, picky eating, may affect the physical development. 3. Impact on respiratory health: salt into the body will inhibit salivary secretion, which will cause a decrease in the enzymes that inhibit germs in the mouth, easily causing respiratory tract infections. Generally, you can add a small amount of salt and other flavorings to the complementary food after the baby reaches one year of age, in order to prevent adverse effects on the body.