Obviously very hungry not to eat milk, may be caused by anorexia, thrush, herpes stomatitis, nasal congestion and other conditions. 1. Anorexia: Physiological anorexia, infants and young children will show anorexia, usually occurs in 3 to 6 months, about a month can be recovered. 2. Thrush: caused by Candida albicans infection, severe cases may show symptoms such as refusal of milk, crying and low fever. 3. Herpetic stomatitis: caused by herpes virus infection, small herpes appear in the oral mucosa, ulcers are formed when broken, showing crying, refusing to eat, salivation and so on. 4. Nasal congestion: nasal congestion symptoms caused by rhinitis or colds, can not ventilate, mouth closed when eating milk, infants and young children suffocated, can not breathe, crying. Crying is serious, should consult the doctor in time, to clarify the cause of the disease, and actively improve the symptoms.