Increasing to dependency on information infrastructures involves various threats to cyber incidents. Most of nations or organizations work on protect to not only infrastructure but also information infrastructure. Korea established Critical Information Infrastructure Protection Act in 2001 that include 5 evaluation criteria for designation of National CII. This research makes a suggestion that detailed evaluation criteria for objectification and measuring for designation of CII in the field of broadcasting and Communication. Also this paper shows the result of simulation and application using proposed criteria.