Liver abscesses include bacterial liver abscesses and amoebic liver abscesses. The early symptoms of liver abscesses of different etiologies are different. 1. Bacterial liver abscess is mainly caused by purulent bacteria, also called pyogenic liver abscess. Early clinical symptoms are first manifested as the primary disease: bile duct lesions can be preceded by bile duct stones. Those with hematogenous lineage may have precursor lesions such as boils, portal phlebitis, and sepsis. Even in the early stage of bacterial liver abscess, once infection occurs, a large number of toxins enter the bloodstream and cause a systemic toxic reaction, which soon results in chills, high fever, and epigastric pain. Fever is mostly flaccid fever, accompanied by profuse sweating and pain in the right upper abdomen or liver area. 2. The pathogen of amebic liver abscess is the histolytic amebic trophozoite from the intestine. The first patient is often accompanied by a history of intestinal amebiasis or diarrhea. Amebic liver abscess has a relatively slow onset, early manifestations of fever, usually at 38-39 ℃, flaccid fever or intermittent fever, afternoon, night sweating, body temperature slightly decreased. If the high fever temperature reaches more than 40 ℃, accompanied by chills, it is necessary to consider the complication of bacterial infection, as the manifestation of septicemia. It is recommended that patients go to regular hospitals for further examination and treatment according to their own symptoms in time, so as not to delay the condition and cause serious consequences.