The baby can not poop may be caused by functional constipation, can be adjusted through the diet, taking drugs, massage the abdomen and other ways to promote defecation. 1. adjust the diet: you can give the baby more warm water, eat fresh vegetables, fruits, increase the intestinal dietary fiber, stimulate intestinal peristalsis at the same time can also alleviate the symptoms of functional constipation. 2. Take beneficial drugs: give the baby supplement intestinal probiotics, such as bacillus subtilis bacillus granules, can regulate the baby’s intestinal flora, improve the symptoms of functional constipation. If necessary, can be given to help defecation Keseru. 3. Massage the abdomen: every night put the baby on the bed, parents can be clockwise massage of its abdomen, is conducive to intestinal peristalsis, reduce the symptoms of functional constipation. The baby can not poop may also be caused by organic constipation, should take the baby to the hospital in a timely manner, active treatment. The above drugs need to be used in accordance with medical advice.