ObjectiveTo analyze the related risk factors of influencing on postoperative severe complications (PSC) in elderly patients with gastric cancer. MethodsAltogether 202 cases of elderly patients with gastric cancer who received surgical treatment between January 2003 and December 2008 in this hospital were analyzed. On the basis of the degree of complications, the patients were divided into the group with PSC and the group without PSC. The relevant clinical and laboratory data were evaluated, and compared with statistical analysis. ResultsClinically the preoperative comorbidity, total gastrectomy, more than 800 ml intraoperative blood loss, intraoperative transfusion, and combined organ resection were significantly correlated with PSC (Plt;0.05). In laboratory data, the lower preoperative serum albumin and the blood glucose level on the first day after operation were significantly correlated with PSC (Plt;0.05). ConclusionThe preoperative comorbidity, lower serum albumin, and extended radical resection are the danger factors leading to PSC.