Fever symptoms usually occur after liver cancer intervention, which is mainly caused by heat absorption after intervention. Liver intervention mainly involves embolization of blood supply around liver cancer or blood vessels within liver cancer, which leads to necrosis of tumor by blocking blood supply and then achieves therapeutic purpose. After the operation, due to the gradual necrosis of liver cancer due to the interruption of blood supply, the necrotic tissues will be gradually digested and absorbed by the organism, during which absorption heat will occur, thus manifesting as fever symptoms. Therefore, fever usually occurs after liver cancer intervention. Fever symptom can indirectly indicate the reaction of liver cancer after necrosis by the temperature level. If the liver cancer tumor is small, the postoperative fever symptoms are not obvious or do not appear. If liver cancer is suspected but confirmed, it is recommended to go to regular hospitals to evaluate the condition and follow the doctor’s instructions for treatment, so as to avoid delaying the condition.