慢性萎缩性胃炎(CAG)是消化领域研究的热点,目前认为CAG的发生是一个多病因综合作用的、漫长的、多阶段、多基因的变异积累过程;CAG的演变规律为“正常胃黏膜→炎症→萎缩→肠化→异型增生→胃癌”已被大家所公认,CAG已明确被定为癌前疾病,但目前临床上始终缺乏特异的治疗方法 Chronic atrophic gastritis (CAG) is a hot topic in the field of digestion. At present, it is thought that the occurrence of CAG is a multi-pathogenic, long-term, multi-stage and multi-gene variation accumulation process. The evolution of CAG is “normal gastric mucosa → Inflammation → atrophy → intestinal metaplasia → dysplasia → gastric cancer ”has been recognized by all, CAG has been clearly identified as a precancerous disease, but the clinical lack of specific treatment for the time being