Infants do not eat milk may be physiological reasons, pathological reasons (such as gastroenteritis, etc.). 1. Physiological reasons: infants may have reached the anorexia stage, which usually occurs between 3 and 6 months of age, when the child’s appetite decreases, eats little or no milk, and can recover after a period of time if the discomfort is not too serious. 2. Pathological causes: such as infant gastroenteritis, the infant’s digestive ability is relatively weak, may appear bloating, no appetite, not to eat the phenomenon of milk, but also may be related to mouth ulcers and so on, there is a painful feeling in the mouth, the child will not eat milk. Infants do not eat milk may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor’s treatment.