If a one-year-old baby has a cough, the first thing to consider is whether it is caused by a cold. In addition to a cough, a cold can also cause nasal congestion, runny nose and fever. If you have a cough with phlegm, you can take some phlegm-reducing medication such as Mucosolvan or acetylcysteine, and drink some warm water, which will help to remove phlegm and reduce the cough. If your baby has an allergic cough, you should avoid allergens and take anti-allergy medication. If your baby’s cough is caused by a foreign body inhaled into the airway, you need to perform a bronchoscopy and remove the foreign body from it before your baby’s cough will improve. If the baby has a dry cough, not during the day but at night, consider cough variant asthma and take oral montelukast tablets for anti-inflammatory treatment to reduce the hyper-reactive state of the airways.