The impact on the body after liver resection is generally relatively small within the permissible range. Nowadays, liver resection mostly takes the form of laparoscopic hepatectomy, which removes 50% of the liver for patients with cirrhosis and 70% of the liver for patients without cirrhosis, and theoretically does not cause liver failure. As long as bleeding, biliary fistula, abdominal infection, intestinal adhesions, and liver failure are prevented after surgery, the patient’s recovery is generally rapid. Among the patients with cirrhosis, if the resection rate liver range is large, especially for patients with liver tumor, they usually have preexisting symptoms such as hepatitis B and liver cirrhosis, and must prevent liver failure and liver coma. Early postoperative monitoring of liver function as well as several preoperative examinations should be performed to take protective measures to prevent the impact on the liver and to minimize complications as much as possible.