In order to improve anastomotic procedures, we performed laparoscopic side-to-side esophagogastrostomy, using a linear stapler, after proximal gastrectomy in two patients with gastric cancer located in the upper third of the stomach. The patients' postoperative courses were excellent. During postoperative recovery, the patients experienced very little pain, used no analgesic medications, and never experienced reflux esophagitis. This procedure is technically feasible and is an excellent option, given the less involved anastomotic procedure and better postoperative quality of life compared with these features in end-to-side anastomosis using a circular stapler.