Liver tumor resection surgery is roughly divided into 6 steps, and the specific steps may be different as the surgery is affected by various factors. 1. Surgical anesthesia: general anesthesia is usually used. 2. Selection of position and incision: lying position can be chosen, and the incision is selected by the surgeon according to the patient’s condition. 3. Exposure of the field of view: After entering the abdominal cavity layer by layer, the liver and the surrounding vascular and neural structures are revealed. 4. Resection: Surgical methods include segmental resection, lobectomy, hemihepatectomy and hepatic trilobectomy, etc. The specific method of resection should be decided according to the size and location of the tumor, the degree of cirrhosis and the patient’s general condition. 5. Treatment of liver section: larger bleeding point or bile leakage should be ligated with fine silk suture. 6. Closure of abdominal cavity: after finishing, close the abdominal cavity layer by layer. The steps of tumor resection may be different due to the different conditions of patients. Therefore, the guidance of specialized doctors should be followed.