Newborn babies not pooping may be caused by anal atresia, gastrointestinal dysfunction, intestinal obstruction and so on, which need to be treated with medication and surgery according to different causes. 1. Anal atresia: It is a congenital malformation of the rectum and anus, due to the malformation of the anus, it can lead to infants not being able to defecate. This condition requires timely surgical treatment, which can be done by means of perineal anoplasty and sacro-perineal anoplasty to improve the anal deformity. 2. Gastrointestinal dysfunction: When babies are born with gastrointestinal dysfunction, the gastrointestinal tract will move slowly, which will easily lead to indigestion and constipation, resulting in babies not having bowel movements. You can use Bacillus subtilis bacillus, Saccharomyces boulardii, Bifidobacterium bifidum and other medications to alleviate the symptoms of constipation through the regulation of the infant’s intestinal flora. 3. Intestinal obstruction: when a baby is born with intestinal obstruction, the contents of the intestines can not be discharged through the intestinal lumen, resulting in newborn babies do not poop. This kind of situation requires timely surgical treatment to relieve the obstruction. Newborn babies do not poop, need to go to the regular hospital for timely examination and treatment, to avoid delaying the condition, the development of the baby affected. The above medications should be used in accordance with medical advice.