Nuclear Power Institute of China (NPIC) is the only large-scale comprehensive R&D base in China incorporating reactor engineering research, design, test, operation and small batch production. Since its foundation in 1965, NPIC has established a complete research and development system, including nuclear power engineering design, equipment assembly and supply of NSSS, reactor operation and application research, reactor engineering test and research, nuclear fuel and material research, isotope production, nuclear technology application research and services, etc.Equipment production division of NPIC has been engaging in radiotherapy equipments production since 1980’s, till now has developed successfully a series of radiotherapy equipments including Co-60 telethraphy,radiotherapy simulator,HDR etc.