Babies with lactose intolerance tend to recover within a few months or so, and there is no clear clinical time standard. However, some babies may be affected for life. Lactose intolerance in babies is related to factors such as lowered expression of the lactase gene, and is easily accompanied by symptoms such as diarrhea, vomiting, crying and restlessness. There is no authoritative clinical data to show the recovery time of lactose intolerance in babies, but most of them recover in a few months or so, but some babies may be affected for life, which is mainly related to individual differences. For lactose intolerant babies, you can follow the doctor’s advice to apply bifidobacteria, lactobacillus and other probiotic preparations to regulate the intestinal flora, for breastfed babies, you can continue breastfeeding, but need to add lactase. Artificially fed babies can choose lactose-free or low-lactose milk powder under the guidance of doctors. Parents are advised to strengthen the baby’s care, can regularly improve the stool reducing sugar test, and according to the results of the doctor’s advice to make targeted adjustments.