The causes of less stool and more exhaust in newborns include the following: First, it is a normal physiological phenomenon in newborns. Because of the relatively young age of newborns, the gastrointestinal tract peristalsis is very fast, plus newborns mainly drink milk, promote the peristalsis of the gastrointestinal tract will appear very little stool, exhaust very much. The accelerated peristalsis of the gastrointestinal tract leads to a lot of gas. The amount of stool produced is relatively small due to the fact that only milk is drunk, which is a normal physiological phenomenon. In addition to the low stool volume and excessive exhaustion, the newborn’s mental state and milk consumption are very normal. Secondly, it is caused by constipation in newborns. If the newborn has very little stool, no stool for 3-4 days, and the exhaust is also very smelly, the newborn should be given timely laxative treatment.