In the majority of cases, pneumonia in children can be detected with a stethoscope, because in children with pneumonia, there is often inflammatory exudation from the alveoli, resulting in a fine rales in the lungs, and the location of the fine rales in the lungs of children is relatively fixed. This is combined with the child’s clinical symptoms, such as cough, sputum, and fever, as well as the child’s chest x-ray. In some mild cases of pneumonia, prompt pathogenic testing and the child’s respiratory rate are required to make a comprehensive diagnosis.