Editors notes: The Opinions of the State IT Promote Leading Group about Strengthening Information Security points out that it is urgent to establish hierarchical information protection system and to formulate management methods and technical guides for the implementation of the system. The subsequent Opinions about the Implementation of Hierarchical Information Protection stresses the significance of the hierarchical information protection, defines the principles, contents, job divisions, basic requirements, and implementation plans for hierarchical information protection, and determines the implementation methods.