1. Tumor treatment is internationally recognized as four major treatment means: surgery, radiotherapy, chemotherapy and immunotherapy. 2. The contribution of the three main treatment means in tumor treatment: 45% of malignant tumors can be cured, 22% by surgery, 18% by radiotherapy and 5% by chemotherapy. The cure of most tumors depends on patients’ awareness of physical examination, early detection, optimistic and strong attitude after illness, and organic combination of various treatment means. 3.What is tumor radiation therapy? Radiation therapy, short for radiotherapy, is a kind of local treatment for tumor, similar to surgery. It is to irradiate the tumor with radiation generated by machines and equipments to kill and exterminate the tumor. 4.What kind of tumor is suitable for radiation therapy? Radiotherapy has a wide range of indications, such as esophageal cancer, lung cancer, breast cancer, nasopharyngeal cancer, laryngeal cancer, tongue cancer, gingival cancer, sinus cancer, rectal cancer, cervical cancer, prostate cancer, skin cancer, thymoma, pituitary tumor, lymphoma, brain tumor, bone metastases and so on. 5. The role of radiotherapy in tumor treatment: in some operable treatments, as a postoperative adjuvant treatment to prevent local recurrence; for patients who have lost the chance of surgery in the middle and late stages, radiotherapy and chemotherapy can achieve the purpose of controlling the growth of tumors, alleviating the symptoms, improving the quality of life of patients and prolonging the period of survival; for patients who can’t tolerate or don’t want to be treated with surgery, radiotherapy is a very good means of local treatment, with good efficacy, low side effects and good results, and it can be used in the treatment of cancer. For patients who cannot tolerate or do not want to undergo surgery, radiotherapy is a good local treatment with good efficacy, small side effects and good patient tolerance.