Can be related to eating too much; Weak gastrointestinal function, etc. If there are no special symptoms, there is no need to pay attention to them, and there is no need to reduce the infant’s food intake just for this. If the stool is bloodshot, it should be tested for blood (whether there are red blood cells in the stool routine; Whether occult blood is positive), if anal fissure can be eliminated, intestinal hemorrhage should be considered, and milk protein allergy should be considered first.