Newborns drinking milk grunting and twisting can be seen in physiological phenomena, pathological conditions, whether normal, need to be combined with the specific circumstances to determine, such as the baby’s mental response to feeding are good, no discomfort manifestations, usually considered normal. 1. Physiological phenomenon: newborns in the process of breastfeeding “grunting and twisting”, but does not affect its mental response and feeding, and no other abnormal discomfort, such as spitting up infrequently, it is considered a normal physiological phenomenon, without special intervention. 2. Condition: If the feeding is not appropriate, the baby’s digestive tract can not tolerate, there are gastrointestinal dysfunction, vomiting or abdominal distension, the baby can be breastfeeding the phenomenon of “grunting and twisting”, usually easy to cry, which affects the amount of breastfeeding, and in severe cases, the mental response is poor, this kind of situation is not normal. It is advisable to consult a specialist to assess the cause of the condition.