It takes an important role on information security for intrusion detection, In this paper, we describes the development of intrusion detection technology and its history. We analyze the structure of power information network and find its possible intrusion, and design intrusion detection framework based on data mining and realize its modules. We design association rule algorithm based on data mining and find associated relation in network data stream. It can detect the intrusion in power information network efficiently. The experiments show that: the intrusion detection system can find intrusion attacks in power information network and protect the network security. |