A newborn’s red face may be associated with imperfect gastrointestinal development, or it may be caused by constipation or intestinal obstruction. 1. Imperfect gastrointestinal development: the gastrointestinal function of newborn babies is often not well developed, and if they are formula-fed, parents give their children a high concentration of milk powder, which makes it difficult to be digested and absorbed properly, and in the long run, this may lead to laborious pooping and a red face. 2. Constipation: Some newborns are constipated, because the stool is too dry, it may be difficult to poop, red face, may also be accompanied by abdominal pain, crying during defecation and other symptoms. 3. Intestinal obstruction: Some newborns with intestinal obstruction may have difficulty in pooping, red face, abdominal pain, bloating, nausea, vomiting and other symptoms. It is usually a narrowing or impassability of the intestinal lumen due to various reasons. Newborns who have a hard time pooping with a red face may also have other causes. If the symptoms recur frequently, or if there are other obvious signs of discomfort, it is recommended to seek medical attention as soon as possible to identify the causative factors and then give targeted treatment.