There are many reasons why a newborn may not poop. Common causes include functional constipation, congenital intestinal malformations, and low amounts of milk drunk. If the child is eating low amounts of milk, less residue after digestion, too little intestinal peristalsis and too little stool is a common reason for not being able to solve the stool. This can be concluded by analyzing the child’s milk consumption and weight gain. Generally, infants need to solve 1-2 stools per day. If the stool is solved once every 2-3 days, there are no other symptoms at this time, it is mostly due to constipation. If there is vomiting, bloating, crying and restlessness, you need to take your child to the hospital for examination to rule out other digestive disorders. Sometimes poor digestion in the gastrointestinal tract can also cause failure to relieve stools, but this time there may be a farting situation. If the child is artificially fed formula, it is necessary to change the brand of formula, or if the formula is protein intolerant, it is necessary to change the formula to partially or completely hydrolyzed formula. Some children also need to be fed some water. Congenital megacolon, intestinal atresia, meconium obstruction due to sticky meconium, etc. can also cause the child not to pass stools. In short, try to ensure that your newborn has a stool within 2 days, otherwise it is recommended to adjust the feeding, and if necessary, hospital consultation.