The specific treatment for infants who have not defecated for three days is as follows: 1. Parents should give their infants more water and feed them regularly, and at the same time, they can assist by rubbing the belly button clockwise to promote intestinal peristalsis and thus defecation. 2. If the child often has no defecation, or if the child’s abdominal distension is obvious due to the lack of defecation and poor feeding and crying, you can give an application of opiates once from the anus to help defecation. 3. The child should pay attention to the intake of fruits and vegetables in daily life to help defecate. 4. Oral medication to soften the stool can be given, such as lactulose oral solution in the morning, which can make the child defecate smoothly. At the same time can be combined with oral mamma love or probiotics to regulate the intestinal flora of children, which is conducive to normal bowel movements of babies.