Gamma Knife uses controlled gamma rays emitted by the radioactive element “cobalt-60”, which are geometrically focused to irradiate tumor lesions and lethally destroy tumor tissues in the target site, achieving the same effect as a scalpel. Gamma knife in the treatment of tumors, is the perfection and development of the scalpel, but can not replace the scalpel. Gamma knife is a radiation therapy, which is incomplete, and its long-term efficacy is far less than that of surgery, so it is suitable for advanced tumors; or surgery is contraindicated; or surgery is lost; or there are serious complications; or postoperative recurrence, metastasis, etc. The scalpel can completely remove the tumor under direct vision, and is the first choice for treating early-stage tumors. Gamma Knife is a bloodless surgery without anesthesia and special preparation. On the surface seems to be non-invasive treatment, but in fact the potential trauma of Gamma Knife should not be underestimated Gamma Knife is a radioactive killing treatment, all normal tissues and tumor tissue in the irradiated area, will be killed, the larger the irradiation range, the longer the irradiation time, the greater the killing of normal tissues, especially to the vital organs, the blow more; Gamma Knife in the irradiation or after the irradiation will also cause a series of radiation reactions, such as hair loss, nausea, vomiting, weakness, and so on. Nausea and vomiting, weakness, white blood cells, platelets and even whole blood cell reduction, etc., and in serious cases, also cause radiation sickness of treatment difficulties.