Patients with liver cysts generally do not experience fever. Liver cysts are a common type of benign tumor, and most do not exhibit any symptoms and are discovered during ultrasound examinations. In such cases, no special treatment is required; regular follow-up ultrasounds to monitor any changes in size are sufficient. However, larger liver cysts may cause pain in the liver area, compression, or even liver function abnormalities. If a liver abscess is also present, as it is a type of purulent infection, the patient may experience fever. Generally, simple liver cysts do not cause fever. If fever occurs, it should be taken seriously, and further examinations should be completed to identify the cause, and treatment should be directed at this cause to achieve a better prognosis.