The cause of acidic baby stools is usually gastrointestinal tract dysfunction caused by overfeeding, overfeeding of complementary foods, and difficulty in digesting complementary foods. Because the baby’s gastrointestinal system is still not sound, the digestive function is also relatively weak, so when the baby feeding too much milk or feeding too much complementary food, it is very easy to cause the baby’s digestive dysfunction, gastrointestinal system is damaged, and so on, so that there is a situation of sour stool. Parents need to be careful not to feed their babies too much at once, but gradually, can also be under the guidance of the doctor, the baby to eat bacillus subtilis bacillus granules and other drugs to improve the baby’s gastrointestinal disorders. In addition, if you feed your baby shrimp, fish, meat and other more difficult to digest complementary foods, it will also produce a burden on the baby’s digestive system, causing the stool to appear sour. There may also be other reasons for the baby’s sour stool, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.