Liver abscesses are suppurative lesions of the liver caused by a variety of microorganisms such as bacteria, fungi, or amoeba lysogenum. Among them, bacterial liver abscess is often a mixed infection caused by a variety of bacteria, which is about 80%, amoebic liver abscess is about 10%, and fungal liver abscess is less than 10%. 1. Bacterial liver abscess: refers to the intrahepatic purulent infected lesion formed by purulent bacteria invading the liver. Clinically, it is mostly seen in patients with diabetes mellitus, who are prone to systemic purulent migratory lesions due to low resistance, among which bacterial liver abscess is more common. Biliary tract disease is one of the most important causes of bacterial liver abscess, such as acute obstructive purulent cholangitis caused by a variety of etiologic factors, bacteria upstream along the bile duct, leading to the formation of liver abscess. 2. Amebic infection: amebas in lysed tissues are the pathogens causing liver abscess, which exist in the colon cavity and intestinal wall tissues in the early stage. When the body’s resistance is lowered, the amebic trophozoites in the liver multiply rapidly, resulting in microvascular embolism, inflammatory reaction, hypoxia, ischemia and so on in the surrounding hepatic tissues, and the small necrotic foci at the initial stage liquefy into tiny abscesses, which merge with each other with the increase of the number, and finally form larger abscesses. If liver abscess is found, it is necessary to consult the doctor in time and treat it aggressively. If it is not treated aggressively, the mortality rate can be as high as 10% to 30%.