Fever in patients with liver cancer can be seen in metastasis of cancer cells or in other cases. 1. When suffering from liver cancer, because the resistance of the body drops significantly, such as respiratory tract infection, urinary tract infection, abdominal cavity infection, etc., recurrent fever can occur at this time. 2. Liver tumor itself is too big, the blood supply inside the tumor is insufficient and necrotic infection occurs, at the same time, the cancer cells will release a large amount of endogenous factors and cause fever. 3. Metastasis of liver cancer can lead to necrosis of cells in corresponding tissues and organs, which can also cause fever. If liver cancer patients have recurrent fever, they need to go to the hospital in time to get a clear diagnosis and treatment plan, and use medicines under doctor’s guidance, avoiding self-medication.