中文摘要：

免疫是机体的基本防御屏障，与乳腺癌的发生、发展、治疗及预后密切相关。辅助放疗是乳腺癌综合治疗的重要组成部分。传统观点认为放疗可直接破坏机体免疫细胞，进而抑制机体免疫的抗肿瘤效果。而近期研究表明，放疗可刺激免疫系统产生一系列积极反应，有利于肿瘤杀伤过程中抗原的加工、提呈、识别及肿瘤的最终杀伤。临床方面，放疗联合多种免疫靶向治疗相继进入临床试验阶段。本文将对乳腺癌放疗对抗肿瘤免疫影响的研究发展及现状进行介绍。

英文摘要：

Immunity is the basic defense barrier for body, and also closely related to the development, progression, treatment and prognosis of breast cancer. Adjuvant radiotherapy plays an important role in the multidisciplinary treatment of breast cancer. It has long been believed that radiotherapy was immunosuppressive because it could destroy the body’s immune cells directly. While recent studies have shown that radiotherapy can stimulate the host immune system in the antitumor process, including antigen processing, presentation, recognition, and eventually tumor-cell killing. In the clinical aspect, a variety of immune targeted therapies, combined with radiotherapy, have entered clinical trials. The article reviewed research progress and status of the inlfuence of breast cancer adjuvant radiotherapy on antitumor immunity.