An authorization management model named five-layer-two-section is proposed through studying on problems of authorization management model and role network model. The model inherits the thought of role network model, and at the same time it expands the role network model by putting website into management model, so as to more accurate authority management. And it puts user and post into one system, and role, activity, website into another. The model, combining rough regulation and meticulous adjustment, integrity and flexibility, could greatly decrease the complexity of the authorization management and the probability of making mistake.