Different colors and shapes of infant stools represent different meanings, for example, golden-yellow soft paste stools are mostly for breastfed infants, earthy-yellow hard paste stools are mostly for formula-fed infants, and yellowish stools containing more milk flaps and fat droplets are a sign of fat indigestion. Breastfed babies have golden-yellow soft paste stools, and the oligosaccharide in mother’s milk can fully stimulate peristalsis, so the stools will not be too hard, and they will be relatively thin or ointment-like, even and consistent, with a sour taste and no foam. Formula-fed infants have earthy yellow hard paste stools, the stool volume is relatively small and dry and rough, and the color of stools is darker after adding complementary foods, close to that of adult stools. When fat indigestion occurs in infants, the stools are pale yellow, pasty, oily in appearance, contain more milk flakes and fat droplets and float on the water surface, and the volume of stools and the frequency of bowel movements are more frequent. Infants with protein indigestion have yellowish-brown, watery stools with milk flakes and a pungent rotten egg odor. Infants who frequently pass abnormal stools should be examined in the hospital to see if it is caused by a disease, and then targeted treatment should be given.