Abstract:【Objective】To study the significance of preoperative serum apolipoprotein A-Ⅰ(ApoA-Ⅰ)on prognosis assessment of distal gastric cancer after D2 radical value.【Methods】The serum ApoA-Ⅰlevels of 87 distal gastric cancer patients who underwent D2 radical operation were detected,and the patients were divided into the low ApoA-Ⅰgroups(n=44)and high ApoA-Ⅰgroup(n=43)according to the median(1.14 g/L),the pathological characteristics and postoperative recovery were compared between the two groups,Kaplan-Meier method,single factor and multiple factors COX regression were used to analyze the correlation of ApoA-Ⅰand postoperative survival in patients with distal gastric cancer after D2 radical operation.【Results】High ApoA-Ⅰgroup and low ApoA-Ⅰgroup had statistically differences in TNM stage(P<0.05).The incidence of postoperative complications in high ApoA-Ⅰgroup was lower than that in low ApoA-Ⅰgroup(P<0.05),the overall survival after surgery in high ApoA-Ⅰgroup was higher than that in ApoA-Ⅰgroup(P<0.05).ApoA-Ⅰwas an independent protective factors of overall survival of distal gastric cancer patients after D2 radical operation(P<0.05).【Conclusion】The level of serum ApoA-Ⅰmay be one of the the protective factors for the prognosis of distal gastric cancer patients after D2 radical operation.