The following reasons are common for newborns’ straining to poop: 1. Dry stool, constipation. To change the diet structure, eat more fresh vegetables, fruits, moderate amount of coarse grains, such as celery, fungus, corn and so on. Promote intestinal peristalsis, you can make the baby more exercise. Clockwise massage around the navel, so that the intestinal peristalsis faster, to promote defecation. At the same time give more water, so that the intestinal tract to maintain a certain degree of wetness. 2, congenital anal stenosis. In the postnatal period that is delayed discharge of fetal stool phenomenon, weekday stool 3-5 days once, stool volume is small, dry, weekday activities less crying, you can go to the pediatric surgery for anus examination, can be given to expand the anus treatment, if necessary, surgery.