Seven months baby cough causes upper respiratory tract infection, cough variant asthma, foreign bodies, etc., can drink pear water but no obvious therapeutic effect, should be for the cause of the corresponding treatment. 1. Upper respiratory tract infection: seven months baby resistance is relatively weak, cold may appear fever, coughing, sneezing and other symptoms, you can take cold spirit particles and other drugs for treatment, for the cough can be given pediatric cough syrup for treatment. Drinking rock sugar pear water can lubricate the throat so that the throat is not too dry. 2. Cough variant asthma: the baby can only show for cough, acute phase can be nebulized inhalation of salbutamol and other drugs to relieve symptoms, chronic use of inhaled glucocorticosteroids such as budesonide, leukotriene modifiers such as montelukast and other drugs. At this time you can drink pear water but there is no obvious therapeutic effect. 3. foreign body: baby if accidentally swallowed a foreign body, may cause discomfort in the throat, irritating cough, it is recommended to go to the ear, nose and throat department, if you see a foreign body, the foreign body will be removed from the baby coughing symptoms can be improved. Seven months after the baby cough symptoms suggest that parents take the baby to the hospital in a timely manner, the drug should be used under the guidance of a doctor, not on their own, in order to avoid adverse reactions. The baby can drink pear water but there is no obvious therapeutic effect.