Two-month-old babies who have not pooped for three days may be related to low diet, poor digestion, constipation and other factors, which can be dealt with through dietary modification, abdominal massage, and medication intervention. 1. Low diet: two-month-old babies may have no poop for three days because of low dietary intake, so there is not much content in the intestinal tract. After timely supplementation of diet, the symptoms can be relieved. 2. Poor digestion: For babies with poor digestion, it is very likely that after food intake, because of the slowing down of gastric peristalsis, resulting in food in the intestine for a long time to gather, resulting in the phenomenon of not pooping. At this time you can give appropriate clockwise abdominal massage, effectively promote gastrointestinal peristalsis, improve the phenomenon of not pooping. 3. constipation: two months baby three days without poop, may also be due to constipation factors, can be used through the use of corkscrew or oral lactulose, etc., so as to improve the phenomenon of constipation. Two months baby three days did not poop may also have other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, give targeted treatment or treatment. The above drugs should be used under the guidance of a doctor.