Babies do not poop for a few days only fart may be due to indigestion, intestinal flora imbalance, constipation and other factors. 1. indigestion: improper feeding, mental and emotional factors may lead to indigestion in infants, abdominal distension, increased exhaust symptoms; at the same time, due to the slowing down of intestinal peristalsis, which leads to a decrease in the number of stools. 2. Intestinal dysbiosis: the development of intestinal flora of infants is not perfect, and it is easy for intestinal dysbiosis to occur, which may lead to an increase in gas in the intestinal lumen, slowing down of intestinal peristalsis, and an increase in gas but no stool symptoms. 3. constipation: infants due to reduced activity, intestinal obstruction, improper diet and other factors, may lead to slow intestinal peristalsis, stool dryness, causing only farting but not poop symptoms. The baby did not poop for a few days may also be related to intestinal diseases, endocrine diseases and other factors, it is recommended to consult a doctor to find the cause of the disease.