It is not recommended that children take probiotics for a long period of time, and they need to be applied in strict accordance with the doctor’s instructions. When the child has indigestion, diarrhea, vomiting and other symptoms, you can use probiotics under the guidance of the doctor to regulate the flora of the child’s gastrointestinal tract and improve the body’s discomfort. The use of probiotics to regulate at the same time can also promote the child’s gastrointestinal tract power, enhance the body function of immunity and resistance. However, probiotics should not be taken for a long time, long-term use of probiotics may damage the micro-ecological environment of the child’s intestinal tract, the barrier function of the intestinal tract has an impact on the protection, which in turn affects the child’s physical health as well as growth and development. In addition, if the child does not have obvious symptoms, it is not recommended to take probiotics. Probiotics for children should be used under the guidance of a doctor to ensure the safety of the medication.