The so-called radiotherapy treatment is radiation therapy, which is a technology that uses alpha, beta and gamma rays produced by radioisotopes or electron beams, proton beams and neutron beams produced by various gas pedals to treat malignant tumors. Radiotherapy is the main treatment means of anti-tumor therapy, characterized by good therapeutic effect and wide applicability, while the danger and destructiveness of the treatment are less. Radiotherapy is generally used to treat malignant tumors that are sensitive to radiotherapy, and can be combined with surgery to improve anti-tumor treatment, or with chemotherapy to improve anti-tumor treatment. For patients with unsatisfactory local tumor control after chemotherapy, radiotherapy can be used again, while for patients with advanced cancer, radiotherapy can be used for palliative treatment to relieve or alleviate pain such as compression, pain and obstruction.