Radiotherapy is generally different for different types of bone cancer. Radiotherapy is the treatment of malignant tumors and some benign diseases by using one or more kinds of ionizing radiation. Before bone cancer patients undergo radiotherapy, they need to determine the treatment according to the overall condition of individuals and choose the correct radiotherapy mode, irradiation range, radiotherapy time and dose, which will help to achieve the best therapeutic effect and improve the quality of patients’ survival. In general, preoperative and postoperative bone cancer with radiotherapy can control lesions, relieve pain and reduce local recurrence rate, while those with extensive lesions that cannot be operated can have radiotherapy alone. It is suggested that patients should consult the doctor in time and have the specific radiotherapy plan clarified by professional physicians.