Chest CT is recommended for pneumonia because it can see lung lesions more clearly than chest X-ray and can better detect hidden diseases, especially if pneumonia is accompanied by a small amount of pleural effusion, which may not be detected by chest X-ray. In addition, chest CT can observe lung lesions in multiple layers, and can see bronchial and lymph node lesions, therefore, chest CT should be chosen. in addition to chest CT, pneumonia should also improve the blood routine, C-reactive protein, calcitoninogen and other inflammatory indexes, and improve the interleukin 6 antibody test if possible, and it is best for patients with pneumonia to choose the antibiotic treatment according to the results of sputum culture and drug sensitivity test. The patient should choose antibiotic treatment according to the results of sputum culture and drug sensitivity test.