1.Cerebral vascular diseases: intracranial arteriovenous malformation, cavernous hemangioma, especially medium, small and deep arteriovenous malformation. 2.Intracranial tumors: auditory neuroma, meningioma, pituitary adenoma, pineal tumor, craniopharyngioma, brain stem tumor, embryonal tumor, brain metastasis, glioma, chordoma, etc., especially tumors located in functional dense area and with high surgical risk. 3.Nasopharyngeal carcinoma, ocular melanoma and other benign and malignant tumors of the head such as eye, ear and nose. 4.Functional diseases: trigeminal neuralgia, intractable pain, Parkinson’s disease, epilepsy, etc. 5, some conventional craniotomy has not been removed clean postoperative residual or postoperative recurrent tumors. Body Gamma Knife treats diseases: Body Gamma Knife has a wide range of indications and can be used for the treatment of primary, recurrent and metastatic tumors in the thoracic cavity, mediastinum, abdominal cavity, pelvis and other parts, as well as post-operative residual tumors. 1, thoracic tumors: primary lung cancer and metastatic cancer, primary and metastatic tumors of the mediastinum esophageal cancer 2, abdominal tumors: primary liver cancer and metastatic tumors, pancreatic cancer, bile duct cancer, gallbladder cancer, abdominal lymph nodes, retroperitoneal tumors, etc. 3, pelvic tumors: rectal cancer, bladder cancer, prostate cancer, cervical cancer, ovarian cancer, etc. 4, other: bone cancer and bone metastatic cancer, hepatic hemangioma and other types of late palliative tumors treatment.