Abstract: The construction of the network security and law enforcement, which is the technology originated from the sciences of the communication technology and the information security as well as the computer science, aims to cultivate the excellent law enforcement officers for the Chinese police works. The information theory which consists of the source coding theory, channel coding and the cryptography is the base of the network communication. The information theory course is also significant to the instructions of the Network security and law enforcement. Furthermore, during the instructions of the network security and law enforcement, the information theory plays more roles to cultivate the law enforcement officers. By introducing the basis information theories and the advanced technologies of the modern communication, the course matrix of the cultivation becomes clearer. In this paper, we gave the discussion of the importance of the information theory for the network security and law enforcement and the deployment of the information theory courses were also proposed with the form of the courses table in this paper. Behind all of analysis of the importance of the information theory for the network security and law enforcement, the conclusion is that the information theory is one of important course of the network security and law enforcement, which is the meaningful work for the construction of the network security and law enforcement. Then the information course is necessary for the network security and law enforcement.