Adult lobar pneumonia is mainly caused by Streptococcus pneumoniae, which usually involves one lung segment and the lung tissue above the segment, and the main manifestation is acute inflammation with diffuse fibrin exudation in the alveoli. There are four clinical phases, the congestion and edema phase, the red hepatoid phase, the gray hepatoid phase, and the dissolution and dissipation phase. The main clinical symptoms are rapid onset of the disease, high fever, chills, chills, chest pain, cough, coughing rust-colored sputum, which can be combined with respiratory distress, signs of pulmonary solid lesions, and peripheral blood, increased white blood cell counts, and the duration of the disease is about one week to fourteen days, and the temperature can be decreased abruptly after treatment. After treatment, the body temperature can drop suddenly and the symptoms disappear. The main treatment is active symptomatic treatment, give nutrition, protein, calories and vitamin intake, and actively give antibiotic treatment.