Abstract: In order to improve the scientificity of high-risk assessment of classified protection of cybersecurity in railway scenarios, and provide evidence for rectification work, this paper analyzed national laws and regulations, classified protection 2.0 of cybersecurity standard system, and railway network security related management methods, and conducted research on typical security issues found in classified protection of cybersecurity assessment in specific railway scenarios, proposed more suitable high-risk judgment criteria and high-risk early warning mechanisms for the railway industry. The application in practical railway scenarios shows that this mechanism is conducive to urging the rectification of high-risk railway issues and supporting the sustainable development of new strategies for railway classified protection of cybersecurity.