肺癌目前全面进入免疫治疗新时代，但是单一的一种免疫疗法仍无法满足免疫微环境的复杂状况，不同免疫联合方案成为克服免疫耐药的有效手段。癌-睾丸抗原（CTA）是一种几乎只在恶性肿瘤中表达的特异性极高的肿瘤抗原，能够产生强大的抗肿瘤免疫反应，是新型免疫治疗中很有希望的靶点。文章就CTA在肺癌中的表达、功能和免疫治疗应用等方面的研究进展进行综述。“,”At present, lung cancer has entered a new era of immunotherapy. However, a single immunotherapy is unable to satisfy the requirements of the immune microenvironment. More and more different combined immunotherapy schemes have become effective methods to overcome immune resistance. As a promising target in the novel immunotherapy, cancer-testis antigen (CTA) is a highly specific tumor antigen to produce a powerful anti-tumor immune response that is almost only expressed in malignant tumors. This article reviews the research progress of CTA's expression, function and immunotherapy application in lung cancer.