Constipation in infants can be a headache for parents. Most parents believe that this may be due to the “fire” caused by the large, but there are also studies that show that lactose deficiency can also cause constipation in infants, especially for infants who eat milk, if constipation occurs, it is more important to check in this regard. Because the lactose content of breast milk is 7.5%, while the lactose content of milk is only 4.8%. Therefore, babies who drink cow’s milk lack fermentable substances in the intestinal cavity, and because they do not get sufficient fermentation, their stools become dry easily. On the other hand, in addition to the different content, the type of lactose in breast milk is different from that in milk powder. The lactose in breast milk is type B lactose, which can produce flora normally, and breast milk contains biochemical enzymes that help babies digest. Whey is the main protein in breast milk, which is intestinal friendly, soft and easy to digest, so breast milk babies have very smooth stools. The lactose in formula, on the other hand, is alpha-lactose, which has an effect on the normal production of flora. The main protein in milk powder is casein, which forms a rubbery curd that is very indigestible and is rarely absorbed completely, becoming mostly waste. Milk has more casein and calcium than human milk, which can cause constipation due to the presence of a variety of insoluble calcium soaps in the stool. What should I do if my baby becomes constipated? If the baby is breastfed, it may be due to insufficient breast milk, often accompanied by symptoms such as weight gain and crying after eating. For this kind of constipation, the constipation will be relieved by increasing the amount of breast milk fed. For milk-fed infants, the amount of milk can be reduced and the amount of sugar increased, that is, the sugar content of milk increased from the original 5-8% to 10-12%, and the appropriate increase in juice. For infants less than 3-4 months old, add some milk cake to the milk, because the carbohydrates in the milk cake are partially fermented in the intestine, which can stimulate intestinal peristalsis and help with laxation. For infants over 4-5 months old, supplemental foods can be added appropriately. It is best to chop spinach, cabbage, bok choy and capers, etc. and put them into the rice porridge to make various delicious vegetable porridge for babies. In addition, supplemental food contains a large number of B vitamins, which can promote the recovery of intestinal muscle tone, which is very helpful for laxative. Infant constipation by the above dietary adjustment effect is still not good, you can give the baby drink honey water, that is, often take honey water or honey into the milk feeding, the effect is better.