The chest x-ray of bronchopneumonia is characterized by different pathogenic organisms. They may appear as large, dense shadows or as speckled, scattered, uneven shadows, depending on the causative agent of bronchopneumonia. A variety of viruses: large, dense and relatively uniform shadows, lesions may be distributed in various parts of both lungs and may sometimes spread to the pleura and appear as pleural effusions on x-ray. Second, atypical pathogens: such as chlamydia, mycoplasma, katamora, Haemophilus influenzae, etc. lead to pneumonia with chest x-ray performance characteristics roughly the same as viral infections. III. Gram-positive cocci: 1. Streptococcus pneumoniae: In the case of lobar pneumonia, this is usually manifested as a large area of increased density and relatively uniform shadows in the form of lobes or segments, and the lesions usually do not span lung segments and lobes, but are confined to one lung segment or lobe. In the case of lobar pneumonia, the lesions may be scattered in various parts of the body and present as scattered, punctate, uneven shadows of increased density.2. Staphylococcus aureus: Aspiration pneumonia can usually form a lung abscess with a cavity with a fluid level and a thick-walled cavity. Pneumonia due to hemorrhagic S. aureus is a spherical nodular lesion that is scattered in the outer bands of the lung and is associated with blood flow distribution. IV. Gram-negative bacilli: such as Klebsiella pneumoniae, Escherichia coli, Pseudomonas aeruginosa, etc. Chest X-ray features are not obvious, usually scattered speckled patches or large uneven density shadows. V. Fungi: The incidence of pleural effusion due to waves of pleura is high. Among them, cryptococcal infection usually shows nodular spherical lesions with smooth edges and clear borders, and single occurrence is common; Candida infection is less characteristic; Aspergillus infection typical chest X-ray performance is scattered nodular, scattered in the outer band of the lung, close to the pleura, and some lesions have translucent areas within. In conclusion, the chest X-ray manifestations of bronchopneumonia have different characteristics. The determination of the causative organism is more a comprehensive analysis combining age, underlying disease, clinical symptoms and signs, laboratory tests, pathogen smear and culture, and chest X-ray features, etc. Not all bronchopneumonia conforms to the above chest X-ray performance features.