The invention discloses a data security management method applied to an operation and maintenance auditing system, which comprises the following steps of: 1, setting an auditing range to filter auditing information; 2, a user logs in the management system for data extraction, and user accounts are centrally managed; 3, identity verification is made on an account logged in by the user, and data isextracted after verification passes; 4, after identity authentication is completed, unified resource authorization is carried out, resources needed by the user are extracted from unified resources, and centralized access control is carried out; 5, the data extracted by the user is audited 6, when the specific server equipment is accessed, an administrator carries out temporary approval and authorization and then carries out operation and maintenance operation; and 7, a planned task is generated and then an architecture is deployed. According to the invention, the security of a user authentication link is improved, operation and maintenance personnel can maintain resources conveniently, repeated work is reduced, and the operation and maintenance efficiency is improved.