Under normal circumstances, three-month-old babies usually defecate 3-5 times a day, if the baby does not poop for a day, but also to observe the child there are no clinical symptoms of discomfort, such as irritability, decreased appetite, abdominal distension and so on. If there is such a situation, usually have to consider the child may be cold, cold or improper feeding, should be appropriate to give the child a gentle massage of the abdomen, to promote intestinal peristalsis, promote defecation, you can give the baby half an hour after the meal to take probiotics, regulate gastrointestinal function, but also to take the elimination of food, spleen and stomach class of proprietary Chinese medicines, such as the four mill soup oral solution, regulate the function of the intestines and stomach. If the child has a bowel movement without any clinical symptoms after the above treatment, no special treatment is needed. If the baby has not been able to poop, after the above treatment still can not be relieved, especially with poor spirit, vomiting, appetite significantly reduced, should be timely to the hospital to see the pediatric emergency room, check the cause of the cause of treatment for treatment.