Generally normal healthy state of the baby does not need to eat probiotics, only the following situations may need to use probiotics: 1, the best age stage to use probiotics is before the age of 2, because before the age of 2 years old baby’s intestinal micro-ecosystem is not well established, the best effect of probiotic supplementation at this time. 2, suffering from intestinal diseases, such as acute diarrhea, chronic diarrhea of the baby, because of various reasons caused The effect of probiotics is more obvious. 3.Babies who may have H. pylori infection can also eat probiotics with certain effect. 4.Babies with chronic diseases and relatively low immunity can eat probiotics to regulate the gastrointestinal tract. 5.Some babies are affected by other diseases that cause digestive system symptoms, such as pneumonia, craniosynostosis, craniosynostosis, etc. Symptoms, such as pneumonia, intracranial infections and other diseases of the baby with antibiotics, the intestinal flora caused a certain degree of impact, the effect of probiotics supplementation in this case is also good. 6, some babies belong to the allergic state, probiotics also have the effect of improving the allergic state.