The invention discloses a distributed dual-license and access control method and a system, the method is applied in the control system including a universal certificate licensing sensor and a plurality of different types of application systems, and the method comprises the grade authority control step which is used for setting the grade of a user through the universal certificate licensing sensor, transferring grade information of the user to the application systems and deciding the access authority of the user to resources or services by verifying the matching relationship between the grade of the user and the grade of coarse-grained resources or services of the application systems; and the group authority control step which is used for respectively carrying out grouping setting on the user and the resources/services through the application systems and deciding the access authority of the user to the coarse-grained resources or the services by verifying the intersection relationship between user grouping and data service grouping.