Bronchopneumonia, also known as lobular pneumonia, is a type of pneumonia. Pneumonia can be categorized into lobular pneumonia, lobar pneumonia and interstitial pneumonia according to anatomy. 1. Lobular pneumonia: a type of pneumonia mainly caused by bacteria or viruses. The lesions start in the bronchi and progress to the peripheral and peripheral lung tissues, forming a focally distributed septic inflammation centered on the lobules of the lungs. It is also called bronchopneumonia because the lesions are centered on the bronchi. 2. Lobar pneumonia: a kind of pneumonia mainly caused by Streptococcus pneumoniae infection, the lesions start from the alveoli, the lesions will be extended to several lobes, belonging to the fibrinous inflammation. 3. Interstitial Pneumonia: a kind of pneumonia in which inflammation occurs in the interstitial tissues of the lungs. The lesions are located in the bronchial wall, alveolar wall, especially the peribronchial vessels, the surrounding interlobular and alveolar intervals of the connective tissue, and most of them are necrotic lesions. When pneumonia is considered, it is necessary to go to the hospital in a timely manner, under the guidance of the doctor to regulate the treatment.