The specific reasons why babies do not have stools for three days are as follows: 1. If babies drink less water, it is not easy to promote gastrointestinal peristalsis, there will be a situation of defecation. 2. The first thing you need to do is to take a look at the product. Parents can rub the belly button as the center clockwise to help the baby to promote intestinal peristalsis, and at the same time feed water in moderation and give the intake of vegetables and fruits to promote the baby’s bowel movement. If there is obvious abdominal distension and constipation, oral lactulose oral solution can be given in the morning to relieve the symptoms of bowel movement.