Newborns who do not have bowel movements for 3 days are generally considered abnormal, and can be seen in functional constipation, congenital megacolon, and other conditions. Newborn poop is an important element in assessing the function of the digestive tract. It is usually considered that breastfed babies have a high number of bowel movements per day, e.g., 2~4 times, and some babies may have 4~6 times, while formula-fed babies have a relatively low number of bowel movements, with 1~2 bowel movements per day, and some babies may have bowel movements every other day. For 3 days without stool newborns are generally considered abnormal. 1. Functional constipation: such babies appear the above phenomenon, defecation interval is longer than before, some can be accompanied by dry stool, nutritional defecation, some babies can be accompanied by defecation crying and other phenomena. Can give the baby massage abdomen to help relieve. 2. congenital giant knot: this kind of babies have constipation, through the use of open plug or enema and other ways to defecate smoothly, perfect abdominal plain film can help diagnosis. It is recommended that newborns who have not had a bowel movement for 3 days should be seen by a physician for evaluation and judgment. The above medications should be used in accordance with medical advice.