In most cases pneumonia cannot be heard by auscultation. Pneumonia generally refers to acute inflammation, mainly bacterial pneumonia, which is an acute inflammation of the lung tissue. Its clinical symptoms are mostly manifested by symptoms of fever, cough, sputum, and chest pain. Pulmonary auscultation is one of the most basic skills for clinicians. When pneumonia occurs, corresponding changes can be auscultated at the site where pneumonia occurs, such as the presence of significantly weaker breathing, dry rales, wet rales, etc. However, none of the auscultatory changes are specific, meaning that the presence of weaker breathing sounds in the lungs and the presence of dry and wet rales are not characteristic of pneumonia, and even if rales are heard in the lungs, they cannot be diagnosed as Pneumonia is not diagnosed even if rales are heard in the lungs. In many cases, the inflammatory exudate is not obvious in the early stages of pneumonia and does not produce dry rales, so they cannot be heard on auscultation. Therefore, in addition to auscultation, chest radiographs or CT of the lungs are often needed to confirm the diagnosis of pneumonia.