Lactose intolerance can be secondary or congenital, secondary to lactase destruction caused by diarrhea, which is temporary. In both secondary and congenital cases, it is recommended to stop breastfeeding temporarily and to breastfeed after the intestinal lactase is restored. Lactose intolerance, in addition to triggering abdominal distension, abdominal pain and other abdominal discomfort symptoms, can also cause malabsorption of nutrients in babies, reduce calcium intake, resulting in serious calcium deficiency in children, lactose intolerance, can also affect the absorption of iron and zinc in babies, directly affecting the normal growth and development of babies, especially the possibility of affecting the brain development of babies. If the baby is taking milk lactose intolerance, do not take milk products as the main food source, you can choose to remove lactose cow milk powder, yogurt, soy milk, goat milk powder, goat milk, etc. In case of congenital lactose intolerance, breast milk and foods containing lactose should not be consumed.