Abstract: Objective: To compare the effects of complete omentum(CO) and partial omentum(PO) resection in subtotal gastrectomy of early gastric cancer. Methods: Forty patients with early gastric cancer undergone with open distal subtotal gastrectomy were randomly divided into CO and PO group(20 patients in each group) . The clinicopathological parameters and the related indexes of postoperative prognosis of two groups were compared. Results: The time of operation and hospital stay of PO group were shorter than that of CO group(P ＜ 0. 01-P ＜ 0. 05) . The serum albumin level of PO group on the first day after operation was higher than that of CO group(P ＜ 0. 05) . There were no differences in the other indexes between the two groups(P ＞ 0. 05) . One case of PO group appeared atelectasis, which was successfully controled by conservative therapy. All patients were alive without recurrence until December 30, 2010. Conclusions: The partial omentum resection in open distal subtotal gastrectomy in the treatment of early gastric cancer has a certain clinical value.