The stools of newborns are usually completely normal after 3 days of life, because in the first 3 days of life are in the excretion of their own fetal stool, the excretion of fetal stool is formed before birth, the excretion can be completely finished within 3 days after birth. 3 days later is the formation of the stool after eating breast milk, the nature and color of the stool will slowly stabilize. Generally, the number of stools is about 2-4 times a day, and if the number of stools is between this range, it is within the normal range. Therefore, the stool will slowly normalize after 3 days after birth. If it is still abnormal, a gastrointestinal tract imaging should be performed in time to confirm whether there is any abnormality of the digestive tract.