Surgical treatment of hepatic tumors has considerably progressed over the past years caused by number of reasons. The level of mortality after liver resections decreased due to correct establishing of volume of operation, improvement of surgical techniques and developing of pre- and postoperative management. Algorithm of hepatic tumorous mass evaluation included patient’s clinical examination, functional hepatic test, tests of hepatic biosynthesis, dynamic tests of liver, determining of viral markers (HBV, HCV), tumor markers, imaging methods (US, CT, MRI, liver scintigraphy, irigoscopy, liver biopsy). US is a screening method for determining of liver tumors. Standard CT of liver and CT angio were used for establishing of tumor localization, dimensions, liver volumetry in case of massive tumors. Scintigraphy is used in cases of liver cirrhosis. Liver biopsy of the tumor and non-affected region is used for determining the quality of the leaving tissue. In difficult cases is performing diagnostical laparoscopy. The techniques of hepatectomies were improved by developing of different methods of vascular control and modern devices for liver transection, based on perfect knowledge of vessels anatomy, the fact very important for improving of postoperative results. 286 patients with liver tumors were treated in surgical clinic during the period 2000-2013. Surgical treatment included 212 (74.1%) patients. Major hepatic resections were performed in 76 (26.6+-2.6, p<0.001) cases, 8 of them after ligation of right portal vein, when weight of leaving hepatic tissue didn’t exceed 30%. In 12 cases (2.1%+-0.83, p<0.05) was made posterior right sectionectomy. In 112 cases (39.2+-2.88, p<0.001) were performed non anatomical liver resections and in 12 cases (2.1%+-0.83, p<0.05) was made angiographic chemoembolisation. Diagnostical laparotomy with biopsy used in 42 cases. Conclusions: 1. Diagnostical algorithm in patients with hepatic tumors included patient’s clinical examination, functional hepatic test, tests of hepatic biosynthesis, dynamic tests of liver, determining of viral markers (HBV, HCV), tumor markers, imaging methods (US, CT, MRI, liver scintigraphy, irigoscopy, liver biopsy). US is a screening method for determining of liver tumors. Standard CT of liver and CT angio were used for establishing of tumor localization, dimensions, liver volumetry in case of massive tumors. 2. The techniques of hepatectomies were improved by developing of different methods of vascular control and modern devices for liver transection, based on perfect knowledge of vessels anatomy, the fact very important for improving of postoperative results.