Three months baby anorexia period will cry when drinking milk, may be physiological anorexia, can be relieved by changing the way of feeding and so on, may also be pathological anorexia, need to go to the hospital in time for treatment. 1. Physiological anorexia: when the baby is 3 months to 5 months old, there is usually a temporary decline in the amount of milk drunk, crying when drinking milk, but normal weight and vitality. It is a normal phenomenon and can usually recover by itself. You can change the way of feeding, eat less and more meals, do not force the baby to drink milk, and try to be in a comfortable and quiet environment during feeding. 2. Pathological anorexia: due to oral ulcers, acute gastroenteritis and other diseases, the baby will have pain, diarrhea, vomiting and other discomforts when drinking milk, and the phenomenon of crying when drinking milk. The emergence of pathological anorexia, the need to timely visit the hospital to identify the cause of the disease. Three-month baby anorexia will cry when drinking milk may also be due to other reasons, it is recommended to go to the hospital in a timely manner, under the guidance of a professional doctor for treatment.