1, no incision, no bleeding, no pain. Body gamma knife is the use of stereotactic technology to focus high-energy radiation on the target area to achieve the purpose of treatment, no need to open surgery, no need for general anesthesia, the patient remains awake during the treatment process, and can even eat and drink, so there is no pain; 2, simple, time-saving. Gamma knife treatment of brain tumors only takes 2 to 3 hours, the real implementation of radiation irradiation only takes a few minutes to tens of minutes, generally before and after treatment hospitalization for 1 to 2 days; 3, high precision, less damage. Gamma knife is a high-tech product, its treatment error is only 0.1 ~ 0.3 mm, so the treatment of brain tumors almost no damage to the normal tissue around the tumor, avoiding the risk of bleeding and hemiplegia that may be brought about by open surgery; 4, for the elderly and frail patients, as well as patients suffering from hypertension, heart disease, diabetes, can not tolerate surgical treatment, then the use of gamma knife treatment significantly improved the safety of treatment.