We examined the effectiveness of partial gastrectomy in the elderly. Twelve patients who underwent partial gastrectomy for gastric cancer in our hospital had an average of 2.75 comorbidities before surgery. Two patients relapsed, and 2 patients died from other diseases. The depth of the gastric tumor was T2 in patients with recurrence. Partial gastrectomy should be considered carefully for advanced stage cancer. There were only small changes in weight, PS, and nutrition before and after surgery, suggesting that partial gastrectomy is effective.