The baby did not poop for three days may be physiological factors, intestinal flora imbalance, dyspepsia and other reasons, if physiological factors do not need treatment, if pathological factors can be given probiotics, promote digestion, laxative medication. 1. Physiological factors: for example, feeding the baby less food, after digestion and absorption of food residues formed less, resulting in three days without stool, the baby did not have other abnormalities, generally no special treatment, appropriate increase in the amount of food and drink can be. 2. intestinal flora imbalance: intestinal flora imbalance can lead to dry stools, so three days without stool, can be given probiotics, such as Saccharomyces boulardii, bacillus subtilis bacillus granules to regulate the intestinal environment, which will help defecation. 3. Indigestion: gastrointestinal peristalsis is relatively slow, resulting in three days without poop, can be given to the four mill soup oral solution, gastric elimination oral solution, bifidobacteria and other medications, at the same time to the baby’s abdominal massage, appropriate to increase the baby’s activity, help to promote gastrointestinal peristalsis, promote fecal discharge. The above medications are recommended to be used under the guidance of a physician, and if necessary, it is recommended to take the baby to the hospital and follow the doctor’s instructions.