There is shadow in the lung, indicating the existence of lung infection. The lung infection may be caused by bacteria, virus, or mycobacterium tuberculosis, which may cause inflammation in the lungs. Therefore, active treatment should be carried out for different types of infection. For pulmonary inflammatory diseases caused by bacterial infection, antibacterial drugs can be used for treatment, and medical advice should be followed. Antiviral drugs can be used for pulmonary inflammatory diseases caused by virus infection. For pulmonary inflammation caused by Mycobacterium tuberculosis, active use of anti tuberculosis drugs is required. It is also necessary to develop good hygiene habits and pay attention to the nutritional support of diet during illness.