巨灾风险不仅会对人类社会造成人员和财产损失,还会造成人们心理上恐惧和资源配置的非优化。国外在巨灾风险分担机制方面有着较多可借鉴的经验,通过重点分析美国和日本在巨灾风险分担机制方面的实践经验,并结合我国现实国情,提出了要从完善再保险、设立巨灾保险基金和利用巨灾保险风险证券化来发行巨灾债券等三个方面来构建完善我国巨灾风险分担机制。 Catastrophe risk not only causes human and property losses to human society, but also causes people’s psychological fear and resource allocation to be non-optimized. Foreign countries have more experience in the mechanism of catastrophe risk sharing. By focusing on the practical experience of the catastrophe risk sharing mechanism between the United States and Japan, and combining with the actual conditions of our country, this paper puts forward some suggestions to improve catastrophe risk insurance, such as improving reinsurance and setting up catastrophe insurance Funds and the use of catastrophe insurance risk securitization to issue cat bonds and other three aspects to build and improve China’s catastrophe risk sharing mechanism.