A baby who coughs while breastfeeding is usually indicative of a transient choking process during milk intake, causing the baby to develop an irritating cough. This cough is a self-protective behavior to avoid choking on the milk deep into the airway. Common causes of choking and coughing can be related to respiratory illnesses such as colds and flu, as well as feeding details. When the baby has a cold and nasal congestion, nasal breathing will instinctively rely on the mouth to breathe, but the mouth to suck when eating milk, at the same time to breathe action. This time sucking, swallowing and breathing action is not coordinated, choking and stimulate cough. In addition, some babies may be in the process of eating milk more quickly, faster, such as bottle-fed baby nipple out of the milk hole is larger or breastfeeding mother’s nipple out of the milk faster, are prone to make the baby’s breathing and swallowing action is not coordinated, thus choking and lead to coughing.