A newborn’s lack of bowel movement for a day is usually abnormal and may be caused by constipation. Generally newborns have more frequent stools, and usually irregular, mainly due to the small baby gastrointestinal digestive function is not well developed caused. So if a newborn has no bowel movement for a day, it is not normal and may be caused by constipation. Newborn constipation phenomenon if breastfeeding, the mother in the diet need to be light, at the same time to drink more water, may help to relieve constipation; if it is formula feeding, the need to brew the milk powder thinner, to avoid overly thick, and also need to be properly supplemented with water. Newborns a day without stool to pay attention to observation, if there has been no improvement, you need to actively go to the hospital, a clear diagnosis, under the guidance of the doctor to deal with, so as not to delay the condition.