Baby stools are sour and smelly mainly because of gastrointestinal maldigestion. If the baby is mixed feeding, the stool is sour and smelly, so some of this may also be normal. But not all sour stools are normal, if the baby’s stool smell is very obvious, it may be the intake of protein indigestion, this time can be appropriate to reduce the amount of breastfeeding milk, appropriate to give the baby more water; at the same time, we must combine the different appearance of the baby stool comprehensive analysis of appropriate treatment, such as baby stool with a lot of foam suggests poor digestion of lactose, if necessary, you can try lactase or lactose-free If the baby’s stool looks oily and has fat drops, it suggests poor digestion of fat, so if the breastfeeding mother’s diet should be lighter and the intake of fatty foods should be reduced; in addition, the baby’s sour stool may also be caused by gastrointestinal flora imbalance, so you can take some probiotics, pay attention to warmth, do not get cold, feed a small amount of times, do not feed too much at a time, and you can cooperate with Chinese medicine massage treatment. In short, the child’s gastrointestinal function is not perfect, the mother in the feeding process must pay special attention to minimize the burden on the gastrointestinal tract.