Abstract: Objective To explore the application of 3D reconstruction combined with 3D laparoscopy in liver surgery.Methods The clinical data of 37 patients who met the corresponding conditions in the Hepatobiliary and Pancreatic Center of Xuzhou Central Hospital from June 2020 to December 2021 were retrospectively analyzed.All patients completed the 3D reconstruction before operation to clarify the blood vessel movement of the liver and its relationship with pathological changes,and the operation was performed by 3D laparoscopy,and the operation mode,operation time,intraoperative blood loss,hospital stay after operation and postoperative complications were observed.Results All 37 patients underwent laparoscopic surgery without conversion to open surgery.The operation time was 60420min,with an average of (226±101)min.Intraoperative blood loss ranged from 50 to 1000ml,with an average of (228±195)ml.Postoperative anal exsufflation time was 1~3 days,with an average of (2.2±0.6)days.The removal time of the drainage tube was 3~20 days,with an average of (7.5±3.1)days.Among the 37 patients,the levels of transaminase and bilirubin in 8 patients returned to normal on the 3rd day after surgery.On the 7th day after surgery,transaminase and bilirubin were all within 100U/L and 34μmol/L in all patients who were not discharged.Postoperative hospital stay was 4-23d,with an average of (9.78±4.1)d.A total of 1 case of  biliary leakage and 8 cases of pleural effusion occurred after operation,and they were cured and discharged after conservative treatment.Conclusion 3D reconstruction combined with 3D laparoscopy is safe and reliable in liver surgery,and has certain effects on controlling intraoperative bleeding,shortening operation time and reducing complications.

Key words: laparoscopic hepatectomy, 3D reconstruction, 3 d laparoscopic