Equal security gap analysis is based on the basic requirements of national information system security level protection. It comprehensively evaluates the security of information systems from ten aspects, including physical, network, host, application, data, system, institution, personnel, construction, and operation, to understand the current security status of the information system, identify the gap between the current situation and the corresponding protection level requirements, clarify non conformities, and propose corresponding rectification suggestions. Due to differences in requirements for different levels, there are also differences in workload for gap analysis of different levels. At present, most application systems are classified as Level 2 or Level 3, with higher levels resulting in greater workload. more