Infants who eat formula without pooping need to be given medication or massage the abdomen to promote defecation, depending on the situation, generally consider the possibility of constipation, or poor digestion of the gastrointestinal tract caused by. But also need to be alert to the possibility of organic lesions. 1. Drugs: If the baby is not defecated for more than 5~7 days, this situation is considered constipation, can be given under the guidance of the doctor to help defecation, if the gastrointestinal tract digestion ability is poor, you can also take the appropriate probiotics, to help regulate the gastrointestinal tract flora. 2. Massage the abdomen: infants due to gastrointestinal tract digestive capacity is not strong, it is easy to gastrointestinal tract flatulence, constipation and other symptoms, parents and friends can usually give the baby massage abdomen, help promote gastrointestinal peristalsis, in order to alleviate the symptoms of flatulence, constipation. Infants who do not defecate for a long time also need to be alert to the possibility of organic lesions, such as incomplete intestinal obstruction, congenital megacolon and so on. It is recommended to take the child to the hospital to consult a specialist, do not be negligent, so as not to affect the health.