In recent years, minimally invasive surgery has been adopted and widely used in Japan and Korea for early gastric cancer with low risk of lymph node metastasis, since laparoscopy-assisted distal gastrectomy (LADG) with lymph node dissection was first reported in 1994 by Kitano. The purposes of laparoscopic surgery for gastric cancer are to minimize surgical insults and to maximize patient's quality of life, while not compromising the oncologic clearance. As laparoscopic experience has accumulated, the indications for laparoscopic gastrectomy (LG) have been broadened to patients with advanced gastric cancer. However, the role of LG remains controversial, because studies of the long-term outcomes of LG are insufficient. Therefore, in order to make sure the same effectiveness of LG as conventional open operation, there are some basic principles should be strictly followed while performing LG, such as properly selected patients, sufficient surgical margins, standardized D2 lymphadenectomy, no-touch technique and so on.