Abstract： Surgery is the mainstay treatment of the multidisciplinary therapy for gastric cancer.The majority of gastric cancer patients in China are diagnosed at the advanced stage.D2 lymphadenectomy is of clinical significance in China.The technical aspects of performing a D2 lymphadenectomy require a significant degree of training and expertise.In this article,the focus is on the dissection of lymph nodes including No.4Sb,No.5-6,No.8a,No.9-11,No.12a,and No.14-15.