With the rapid development of Internet and information technology, cyber security has more and more influence on national economy, social life and even national security. At the same time, banking, telecommunications networks, government departments and other key infrastructure, large-scale commercial websites, cloud services, industrial Internet are increasingly becoming the focus of cyber attacks; and cyber security and security incidents of basic network, important information systems, common software and hardware vulnerabilities, large web sites and personal information leakage are serious, which has threatened data and personal information security, social stability and national security. Cyber security event information disclosure mechanism can effectively prevent and control the risk and threat of cyber information security, such as malicious software, vulnerability risk, data leakage and so on. "Cyber Security Act" (Draft) established the corresponding information disclosure provisions. Therefore, to further clarify the responsibility of the main body of the cyber space and effectively manage and regulate the risk of cyber security incidents, it is practical necessity to construct the effective information disclosure mechanism of cyber security event .