If a 5-month-old baby sleeps and coughs a few times without other abnormal manifestations, it is generally normal. If the baby coughs frequently, the presence of poor spirit, shortness of breath and other manifestations, suggests that it is not normal. Need to be based on specific circumstances, can not be generalized. Usually, due to 5 months baby’s respiratory system is not yet well developed, when sleeping by the cold air stimulation, easy to cause coughing, if the baby has no other abnormalities, 5 months baby sleeping cough a few times to consider a normal situation, do not have to worry too much. However, if the 5-month-old baby sleep cough often, and there is poor spirit, asthma, nasal congestion, night crying and other manifestations, is not normal, consider may be upper respiratory tract infection, gastroesophageal reflux, pediatric pneumonia and other diseases. In summary, caused by the 5-month-old baby sleep cough a few more reasons, need to go to the hospital, improve the examination, clear cause cough specific reasons, in order to determine whether it is normal.