Milk flaps are white particles or flaps in the baby’s stool. Most of them are caused by poor digestion of proteins and fats, and the combination of undigested proteins and minerals in the food forms milk flaps. If the milk flap in the stool is not larger than the size of a grain of rice, it is generally considered to be normal; when the milk flap in the stool is larger than the size of a grain of rice, parents should pay sufficient attention to it. The shape of normal stool is related to the feeding method. The baby’s digestive function is not yet perfect, breast-fed baby stool is golden yellow, occasionally slightly green and thin, or ointment-like, uniform, with a sour taste and no foam. If you eat formula, the stool is usually yellowish or earthy, dry and rough, like hard paste, often with an unpleasant fecal odor. If the amount of sugar in the milk is high, the stool may become soft and slightly rotten-like odor, and the volume of each bowel movement is also high, and sometimes the stool is mixed with grayish-white milk flakes. When there are white particles in the baby’s stool, or white flaps, the presence of milk flaps in the stool is a sign of poor protein digestion. For breast-fed babies, mothers should reduce the protein intake in their own food and eat as little high-protein food as possible; mixed or hand-fed babies who eat formula should switch to formula with small-molecule hydrolyzed proteins to improve the baby’s indigestion of the large-molecule milk proteins in regular formula, and the milk flaps gradually disappear.