The invention provides a secure access service integration modeling method, which belongs to the technical field of information security. In the method, for a secure access service in a system, the secure access service comprises an authentication flow, an access control flow and a check flow; on the basis, a business process execution language (BPEL)-based secure access service flow is designed and implemented, related Web Service components are provided for the realization of specific functions for the detailed processing flows of authentication, access control and check in the secure access service flow, and interfaces between the secure access service and the Web Service components and exchange information between the service and a Web Service are realized by a BPEL. A service integrator can conveniently integrate conventional information security components and the Web Service by the BPEL, fast develop a set of applicable secure access service flow, and in addition, can fast replace the Web Service in the service flow so as to improve the development efficiency.