There are individual differences in the number of bowel movements of 20-day-old newborns, which are generally related to the way they are fed. Usually when breastfeeding, about 5~7 times a day is normal. If they are formula-fed, they usually have 2-3 bowel movements per day. Since the digestive tract of 20-day-old newborns is not yet fully mature, and the intestinal flora of newborns has not been fully established, the number of bowel movements will be more frequent and irregular. Breastfed newborns will have more frequent bowel movements, which may be about 5~7 times a day, sometimes even more. However, if the weight gain is good and the general condition is good, it is usually normal and does not require special treatment. If formula feeding, usually 2~3 times a day stool, if more than 5 times, may be related to pathological factors, such as non-infectious diarrhea, commonly lactose intolerance, the child will have abdominal distension, diarrhea, foamy stools, and the number of stools will be more frequent, accompanied by irritability, crying, need to change the feeding of the milk powder in a timely manner. If the number of newborns defecation increased, you should consult a doctor in time, and symptomatic treatment, so as not to affect the gastrointestinal function of newborns.