It is normal for a baby to cough a few times a day if it is not accompanied by other uncomfortable symptoms. Coughing is a protective reflex of the human body. Irritating gases, pathogens and suspicious substances in the respiratory tract can be expelled from the body through coughing action as follows: 1. Physiological phenomena: In daily life, coughing symptoms occur if the speed of breastfeeding is too fast due to hunger, or if the coughing situation occurs because the speed of milk flow is too fast and it is too late to swallow too much milk due to the physiological characteristics of the stomach Coughing symptoms occur due to gastroesophageal reflux. If the cough is accompanied by difficulty in breathing and bruising, it is abnormal and should be immediately referred to a doctor.