The project is a national topicwhichbelongs to the National Natural Science Foundation Project. It was undertaken from January, 2007 to December,2009. The project solved the problem of digital rights to control the continuity of a distributed application environment. The project defined the connotation and extension of the obligations, conditions and the attribute sets. Through the analysis of variability and the consideration of obligations and conditions, sustainable digital rights control model had been put forward. Through the analysis of the relationship between application control system and traditional access control system, and the trusted management and digital copyright protection strategy, a framework of application control system which is universal, fine and sustainable was built. Through derivative control model application strategy, the feasibility of the application control model and its description mechanisms was verified. The project used the update mechanism of attributes and authorization decisions in the process of the application of a finite state at the first time. Through the innovation of traditional access methods, process-based digital control description language was put forward. The project can be widely applied to the field of trusted management, digital copyright protection. It can lay a solid theoretical and technical foundation for the development of the construction of China's digital media service system.