Pneumonia can be detected by listening to lung sounds, and wet rales can be heard in pneumonia. The diagnosis of pneumonia is determined by a combination of lung imaging, as well as laboratory tests, and clinical symptoms. Lung imaging will show new onset of infiltrative shadows, and the clinical manifestations of pneumonia usually include cough and sputum, usually with fever, and in severe cases, shortness of breath, chest tightness, chest pain, and dyspnea. Laboratory tests may show elevated C-reactive protein, and if the pneumonia is caused by bacteria, there will be elevated white blood cells or neutrophils. Pneumonia can be caused by a variety of pathogens and can be treated according to the type of pneumonia infection. If the pneumonia is caused by a bacterial infection, effective antimicrobial drugs need to be applied. For pneumonia caused by viruses, sometimes there is no specific antiviral drug, such as the new coronavirus pneumonia.