Baby probiotics are usually best taken at mealtime or half an hour after meal. Probiotics have the function of regulating intestinal flora and improving the immunity of the body, and are mainly used in the clinical treatment of pediatric diarrhea, including indigestion, dysentery or enteritis, etc. Or probiotics can be given to children during the change of season to enhance their immunity and avoid sudden changes in ambient temperature leading to colds or gastrointestinal discomfort. Regarding the best time to take probiotics, it is usually recommended to take it at mealtime or within half an hour after meal, and the water temperature should not exceed 37℃, so that it can reduce the digestion of probiotics by gastric acid, which is conducive to the best medicinal effect. If the child is combined with gastrointestinal pathogenic infection, anti-inflammatory treatment is also needed. Probiotics should be taken under the guidance of a specialist, and long-term use is not recommended.