By 2017，the total number of radiotherapy equipment in the world totaled more than 20，000 units，and the total sales revenue of radiotherapy market was approximately US$6 billion. with an average annual compound growth rate of approximately 7%，the total sales revenue of the global radiotherapy market is expected to reach Up to 9 billion U.S. dollars by 2022. In the past decade，the radiotherapy industry has developed rapidly. The overall market for domestic radiotherapy has grown from 58.3 billion yuan in 2008 to 26.9 billion yuan in 2015，with a compound annual growth of 24.42%. On April 9，2018，the latest Medical Device Configuration License Management Directory （2018） is noticed that the radiotherapy equipment has been reclassified. Gammaknife，which has a market share of more than 90% in domestic brands，was formally classified as a Class B configuration certificate. This means that in addition to accelerators，Gammaknife will also have explosive growth in the next five years. The favorable policies and market prosperity provide a good market environment for the development of radiotherapy equipment.