Background: China is the high incidence area of liver disease, some of which need to be treated by surgical liver resection. The development of minimal invasive techniques opened up a new situation for hepatectomy. Intrahepatic Glisson's approach and the classical procedure are the two major operation procedures used in laparoscopic hepatectomy. The intrahepatic Glisson's approach has the advantages of less intraoperative bleeding and shorter operation time in our experience and as previous studies. The investigators expect further comparison of the safety and efficacy through this prospective controlled study by using two kinds of operation procedures.