Abstract: This paper analyzed the current situation of network security protection in railway design corporations, compared and formulated the security situation awareness technology scheme, focused on the problems encountered in the practice of situation awareness technology in railway design corporations, the adaptive adjustment of the existing network and security prevention and control system, implemented network wide traffic security situation monitoring and security automation, made the security situation awareness technology play a core value in the comprehensive network security prevention and control system, and effectively improved the overall security level of the corporations.