Colorectal cancer is a significant group of malignant neoplasms that dominates the morbidity and mortality patterns in the world. for patients with colorectal cancer, a multidisciplinary approach is required when choosing treatment tactics involving surgeons, radiotherapists and chemotherapists. At present, it is impossible to overestimate the role of radiotherapy in the treatment of locally advanced rectal cancer. The purpose of this review is to summarize current data on proton beam therapy and its role in the treatment of rectal cancer.