The impact of mothers’ indigestion on babies during breastfeeding is mainly due to: 1. malnutrition of babies, because mothers’ indigestion leads to the food entering the stomach cannot be digested, absorbed and excreted from the milk, resulting in the reduction of nutrients in the milk, which leads to babies not getting sufficient nutrients from the milk and malnutrition. 2. The nutrients in the milk are reduced and water is increased, when the water in the milk is increased, the water in the baby’s breast milk is increased, too much water can dilute the baby’s stomach acid, thus appearing indigestion. Especially after the addition of complementary foods, the baby will not be able to digest the food and accumulate in the gastrointestinal tract, resulting in abdominal distension symptoms. Therefore, it is recommended to stop or reduce the baby’s complementary feeding when the mother has indigestion.