Babies are lactose intolerant and mothers cannot significantly adjust the lactose content of their milk through diet. So a normal diet is sufficient. Lactose, as the name suggests, is a sugar found in all natural dairy products. Cow’s milk, goat’s milk and human milk all contain lactose, but the amount varies depending on the species. Breast milk contains more lactose than cow or goat milk. The percentage of lactose intolerance in Chinese people is 70%-90%, and some babies also have lactose intolerance, which manifests itself as loose stools, frequent bowel movements, bloating, farting, and then accompanied by milk overflow. It is difficult for a mom to change the lactose content of her milk by adjusting her diet. That is to say, no matter how much carbohydrate, fat or protein the mother avoids, the lactose level in the milk is always in a relatively stable state. This is why babies with lactose intolerance usually can’t be resolved by mom avoiding food and need lactase to improve the symptoms. If the lactose intolerance is secondary, lactose-free milk powder can be used for a short period of time. If lactose intolerance is suspected, the baby needs to actively seek medical advice, and all medications should be taken according to the doctor’s instructions.