Recently, the research group of Yu Jie/Chen Zhibin of the Institute of Nuclear Energy Safety Technology, Hefei Institute of Material Science, Chinese Academy of Sciences has made new progress in quantitative safety evaluation methods for fusion reactors, and related research results have been published in Nuclear Materials and Energy. Ensuring nuclear safety is a prerequisite for obtaining a permit for construction and operation of a fusion reactor. Fusion reactors are characterized by high-energy neutrons, large amounts of radioactive tritium, complex structures, and extreme service environments. They have unique potential safety issues. The traditional safety assessment methods developed based on the experience of fission reactors are not fully applicable to fusion reactors, so they must be carried out. Targeted research. The research conducted an in-depth analysis of the accident safety characteristics of the fusion reactor, and proposed the differences from the fission reactor in terms of movable radioactive source items, energy source items, containment barriers, etc., and further identified the initiating events of the fusion reactor, and clarified the potential of radioactive materials. Way of release. Studies have shown that the total amount of radioactive source items in fusion reactors is 2 orders of magnitude lower than that of fission reactors. It is expected that no serious accidents similar to Fukushima will occur, but there are many types of initial events and the release of radioactive materials is complicated. On this basis, the researchers further proposed a quantitative evaluation method for the overall risk of a fusion reactor based on the CCDF risk curve. This method is more comprehensive than the traditional R=P*C probabilistic risk assessment method, and provides a reference for future safety assessment of fusion reactors. The research work was funded by the National Key Research and Development Program and the National Natural Science Foundation of China. Poly Aluminium Chloride Flocculant (PAC), Chloinated Polyethylene (CPE), Tripe Sodium Phosphate, Disodium Phosphate YIBIN PERFEC INTERNATIONAL TRADE CO.,LTD , https://www.yibinbofei.com