Ultra-small medical electron accelerator

The invention relates to an ultra-small medical electron accelerator. The ultra-small medical electron accelerator includes: an accelerating tube that receives RF power input from an RF power coupler;and a cathode that is connected to one end of the accelerating tube and releases electrons according to the RF power input into the accelerating tube. A power supply for applying a high voltage to the cathode is removed, so that the ultra-small medical electron accelerator is simple in structure and can be made into an ultra-small size. 本发明涉及超小型医疗用电子加速器，所述超小型医疗用电子加速器包括：加速管，接收从RF功率耦合器输入的RF功率；阴极，与所述加速管的一端相连，根据所述加速管被输入的RF功率而释放电子，因去除了向阴极施加高电压的电源而结构简单并能够制作成超小型。