Objective To explore the effect of fast track rehabilitation in patients with gastric cancer during perioperative period. Methods Eighty patients were randomly divided into conventional method group （n=40） and fast track rehabilitation group （n=40）, and to compare the levels of total lymphocyte count （TLC） , C-reaction protein （CRP），IgG， IgM， IgA， CD3＋， CD4＋， CD8＋， and CD4＋/CD8＋ in serum on the days of 1 d before operation and 1 and 3 d after operation，and to record the duration of fever，first ventilation time of flatus， postoperative hospital stay time，and the postoperative complications. Results The first ventilation time after operation was advanced in patients of fast track rehabilitation group， and the postoperative fever time and hospital stay time after operation of patients was shorter in fast track rehabilitation group than that in conventional method group （P＜0.05）. The incidence difference of complications in two groups had not statistic significance （P＞0.05）. The TLC on 1 d after operation were lower than that on 1 d before operation in two groups, and the CRP values of 1 d after operation were higher than that of 1 d before operation in two groups （P＜0.01）. Compared with 1 d before operation, the CRP value on 3 day after operation in fast track rehabilitation group was lower than that in conventional method group, and the levels of IgG, IgM， IgA， CD3＋， CD4＋， CD8＋， and CD4＋/CD8＋ were higher than that in conventional group （P＜0.05）. Conclusions Fast track surgery applied to patients with gastric cancer during perioperative period is safe and efficient， which can mitigate the immunologic impairment of patients and accelerate postoperative rehabilitation．