Baby four or five days without poop may be caused by bad habits, taking drugs, intestinal obstruction and other factors. 1. bad habits: in the baby to eat too much dry food, less water intake, too little exercise, etc., may lead to dry stools, bowel movements slowed down, the baby four or five days do not poop and so on. 2. taking drugs: baby in taking pediatric calcium carbonate D₃ granules, calcium carbonate D₃ chewable tablets and other types of drugs, usually may appear constipation and other adverse reactions, may cause the baby four or five days do not poop and so on. 3. intestinal obstruction: intestinal obstruction may appear abdominal pain, abdominal distension, unable to defecate, fever and other symptoms, so the baby four or five days without poop may also be caused by intestinal obstruction disease. Baby four or five days without poop may also be constipation and other reasons, it is recommended to go to the hospital in a timely manner, under the guidance of the doctor to clarify the cause of the disease, to avoid prolongation of time, resulting in the baby’s physical discomfort.