Cybersecurity level protection assessment is the legal verification process of China's cybersecurity compliance system. According to the “Cybersecurity Law”, “Cybersecurity Level Protection Regulations”, and the national standard GB/T 22239-2019, the security technical protection and security management system of the enterprise information system is individually checked and tested to determine whether the system protection capability matches the established security level, output an official assessment report, investigate security flaws, and issue a rectification plan. It is an essential verification step for enterprises to complete compliance.