This is mainly because salt will increase the burden on the kidney and easily lead to abnormal metabolism of the kidney. Before the age of one, the baby's kidney development is not perfect. Eating salt too early will increase the burden on the kidney, cause abnormal metabolism, and easily lead to diseases such as kidney calculi's disease and renal cyst. Therefore, Ma Bao must pay attention to the baby's diet. Salt is rich in sodium chloride, which will affect the baby's kidney development.