Abstract: With more and more volume, velocity and variety (3Vs) of data generated from modern day networks, Visualization methods are used to quickly and effectively identify network attacks and abnormal events. Considering the characteristics and defeats of current working visualization systems, A new type of intrusion detection system, IDS Viewer, a system based on the radial panel visualization technology, has been introduced and developed. With a main focus on improvement of user experience, decrease of image occlusion and situation awareness, analysts can utilize fast recognition ability of human abstract thinking, in order to assess the network security situation from macro view and find the pattern of attack from micro view, which can tackle the weakness of the traditional intrusion detection systems.