Sputum sounds in babies can be pneumonia, and it is not always pneumonia. This is because when a toddler is small and has respiratory secretions, the toddler does not cough and the sputum is always present in the throat or on the trachea. For example, if a parent hears a whirring sound in the toddler’s throat and a phlegm sound, the first thing to do is to take the toddler to the hospital and have the doctor listen to see if there is pneumonia and see if there are any rales in the lungs. If the child is in good spirits, eating well, playing well, and does not have a fever, parents can observe the situation at home for a few days. For children who are usually good-tempered and have no change in temperament, we can observe them at home for 1-2 days. For smaller children, such as those within 6 months of age, sometimes there is a phlegm sound in the throat, which may be a sign of congenital dysplasia of the laryngeal cartilage. Children with congenital laryngeal chondrodysplasia will heal naturally as they grow older. However, parents of children with congenital dysplastic laryngeal cartilage need to take better care of their children to try to prevent them from choking on milk. Because children with congenital dysplastic laryngeal cartilage may also have a slightly poorer resistance, they are also prone to respiratory infections. So care should be stepped up to prevent colds. Once a child develops a cough based on the original phlegm in the throat, he or she should still go to the hospital promptly.