Abstract: Gastric cancer has become a major public health problem in China because of its high prevalence. CircRNA could stably exist in various human body fluids, providing the innate advantage for the liquid biopsy, which makes it a research hotspot in the field of precision therapy in recent years. Based on the biological characteristics of circRNAs, we summarize the research progress of circRNAs in the early diagnosis, treatment monitoring and prognosis assessment of gastric cancer through literature retrieval in mainstream databases such as PubMed, Web of Science and CNKI. We also discuss the possibility and reliability of circRNA as an emerging liquid biopsy biomarker, to offer a vision for the development and clinical transformation of circRNA as a molecular marker of the diagnosis, treatment, evaluation and prognosis of gastric cancer in the future.