The main cause of fever after extubation 10 days after segmental hepatectomy is due to infection. Liver surgery is complicated, both open surgery and laparoscopic surgery will cause large trauma, localized effusion and bile leakage, and even if a drain is placed after surgery, complete drainage of the effusion cannot be guaranteed. If fever occurs after the tube is removed 10 days after the operation, it is considered that there is still a possibility of an infected focus, such as an infected focus in the pelvis or a retroperitoneal abscess. In addition, if the intrahepatic bile duct is mistakenly damaged during the operation, there is also the possibility of postoperative biliary fistula, which will cause bile to erode the peripheral abdominal omentum and organs, and may also cause secondary infection and fever. There are also some elderly people or long-term smokers who have chronic lung disease, surgical intubation anesthesia stress as well as postoperative bed rest for a long time, will also increase the chances of lung infection, will also appear fever. Fever after extubation 10 days after segmental hepatectomy may also have other causes, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.