tumors and other lesions. The world's first gamma knife was born in Sweden in 1968, this technology has long been the sole monopoly of Sweden. 1993, Song Shipeng returned from Sweden to create China's first gamma knife development group; two years later, he led the research and development of the world's first rotary gamma knife, the "knife" to obtain the U.S. Food and Drug Administration (FDA) The "knife" was certified by the U.S. Food and Drug Administration (FDA). Currently, there are 10 gamma knife manufacturers in the world ***, 9 of which are in China, almost all of them applying the patented results of Song Shipeng.