The baby 4 days do not poop may be physiological factors, such as eating too little, too little exercise, etc., at this time need to appropriately increase the baby’s eating and exercise; may also be due to pathological factors, such as constipation, intestinal obstruction and other conditions, general measures, medication, surgical treatment can be taken. I. Physiological factors: such as eating too little, liquid absorption after digestion, less residue to stool reduction, thickening. It may be appropriate to increase the amount of food and drink more water; it may also be appropriate to increase physical exercise to promote intestinal peristalsis and so on. II. Pathological factors 1. constipation: baby 4 days without poop may also be constipation, for constipated babies need to eat more leeks, celery, bananas, pears and other foods; drink more water, increase physical exercise, but also defecation training; if necessary, you can use the Keseru; can also be oral bifidobacteria and other micro-ecological agents. 2. Intestinal obstruction: babies have abdominal pain, crying, vomiting, abdominal distension, and stop defecation through the anus. In addition to treating the primary disease, conservative treatment is often used, including fasting, gastrointestinal decompression, rehydration, nutritional support, together with acupuncture, traditional Chinese medicine and other treatments; in case of mechanical complete intestinal obstruction, especially strangulated intestinal obstruction, surgical treatment is required. When the baby does not poop for 4 days, he should go to the hospital and cooperate with the doctor for active treatment. All the above medicines should be used under doctor’s guidance, avoid self-medication.