Diarrhea is a physiological phenomenon that occurs in infants and toddlers, and usually occurs 1-2 months after birth. The duration of diarrhea varies from baby to baby, with some babies and toddlers ending in a few days and others lasting several months. If the infant is in good spirits and is eating and weighing normally, parents should not worry too much. This is because babies and toddlers digest and absorb breast milk better and produce less food residues, so the decrease in the number of stools is normal and no intervention is needed. With the addition of complementary foods to the diet or the gradual development of the child’s stomach and intestines, the stools will gradually become regular. When babies and toddlers have tummy time, parents should pay attention to the child’s condition, let the child drink more water, give appropriate abdominal massage to promote intestinal peristalsis, help the child defecate, if necessary, you can also take intestinal probiotics under the guidance of the doctor to help digestion. However, if the child is crying, bloating, vomiting and other symptoms during the period of diarrhea, you should seek medical attention to clarify the cause.