Gastric cancer is the fourth malignancies and the second cancer -related mortality rate in the world.Although the incidence of gastric cancer has declined in the past few decades ,it is still a serious health problem.Tumor microenvironment plays an important role in tumorigenesis and progression .The main components of gastric cancer include tumor associated macrophages、lymphocytes、cancer-associated fibroblasts、angiogenesis factors,cytokines,gastric microenvironment and the mechanism of action of chemokines .In this review,the corre-lation between tumor microenvironment and GC is discussed .