The causes of recurrent fever in liver abscess include untimely treatment and hypoproteinemia. 1. Untimely treatment: When diagnosed with a liver abscess, it must be treated promptly. If it is not treated in time, it may cause the bacterial toxin in the abscess to enter the blood circulation of the organism through the hepatic blood sinusoids, which may lead to septicemia, and then recurrent fever will occur. Therefore, timely puncture and drainage and active anti-infection treatment must be carried out. 2. Hypoproteinemia: the disease may lead to hypoproteinemia, then there is a possibility of pleural effusion or abdominal effusion, which may also lead to recurrent fever. If you find the diagnosis of liver abscess, you must go to the regular hospital to receive treatment from the doctor.