Proton heavy ion is a means of radiotherapy that is more effective and has fewer side effects for patients with limited cancer lesions and no metastases. However, the cancers with high cure rate of proton heavy ion are not limited to six types of cancers, but can be applied in the early treatment of many cancers or once in the palliative treatment of advanced localized tumors, which can delay the progression of the disease and improve the prognosis. Cancers with high cure rate of proton heavy ion, common central nervous system tumors, head and neck tumors, chest tumors, abdominopelvic tumors, etc.: 1. Central nervous system tumors: such as meningioma, glioma, pituitary tumor, astrocytoma, etc. Compared with traditional surgery, proton heavy ion has less damage to brain tissue, can reduce the radiation dose received by the brain, and can be done for the site of brain tumor 2. Head and neck tumors: such as nasopharyngeal cancer, oral cancer, laryngeal cancer, sinus cancer, parotid cancer, etc. Proton heavy ion therapy for nasopharynx and oral cavity can reduce the radiation dose to the oral cavity and esophagus, thus reducing the damage to the oral mucosa and throat, reducing the side effects of pain and dry mouth, and reducing the damage to the taste buds of the tongue and preserving the sense of taste. At the same time, it can reduce the need of placing irrigation esophagus, basically kill the cancer cells in the lesion, with strong precision, less damage to the surrounding organs, less chance of lymphatic metastasis, and less trauma compared with traditional surgery. 3. chest tumors: such as lung cancer, chest cancer, esophageal cancer, breast cancer, etc. Proton heavy ion applied to the treatment of chest tumors can reduce the radiation dose to the heart, esophagus, lung and breast. The treatment of chest tumors can reduce the radiation dose to the heart, esophagus, lung and breast, reduce the impact on cardiopulmonary function, reduce lung tissue fibrosis, swallowing pain, reduce the incidence of myocardial infarction, achieve a better local control rate, and improve the quality of life of patients; 4, abdominopelvic tumors: such as liver, prostate, pancreatic, rectal, gallbladder, cervical and ovarian cancer, etc., can reduce the radiation dose to the intestines, liver and ovaries, reduce the impact of radiation on the endocrine function, reduce organ Endocrine function, reduce organ function damage, reduce the side effects of the gastrointestinal tract, can achieve local control; 5, other: proton heavy ion can also be used for chondrosarcoma, lymphoma, bone cancer, etc., can reduce the radiation dose, reduce the impact on the development of the body.