The construction of high-energy accelerator benefits from the development of science and technology, such as high vacuum technology, superconducting technology and computer technology. Accelerators play an important role in people's production and life while helping people to further explore the mysteries of the micro-particle world. In the 1940s, electron accelerators were used to treat cancer. Particle accelerators are also used in industrial flaw detection, food preservation and preservation, composite material production and medical supplies disinfection.