Coughing is the most common symptom of pediatric pneumonia. If your baby is cured of pneumonia and coughs again, there are several reasons for this: First, you can cough again after getting well from pneumonia and catching a cold, usually accompanied by a runny nose, sneezing, and some babies even have a fever. Second, babies recovering from pneumonia may also have a cough that is not strong, no fever, and is generally okay in terms of spirit and milk intake, with no other obvious symptoms besides coughing, which can last about a week. Some coughs will last longer after infection. As long as the cough is not too much, the child is in good spirits, and the cough does not affect life or sleep, you can continue to observe, but the cough will not last more than eight weeks after infection. If it lasts longer, pay attention to cough variant asthma and other diseases. Thirdly, some babies have allergic rhinitis, which is induced by infection and will manifest as morning cough, itchy nose and more obvious nose rubbing, which requires treatment of rhinitis for the cough to be relieved.