IT systems' structural relationship visualization system is a web system, which utilizes three-dimensional visualization technology to build the business to IT visual management model and presents the relationship among the system's business, systems, processes and physical devices supported by three-dimensional, simulation and real-time interaction[1].It can visually show business relationship in different levels of application nodes, owner, relationship between the application and the relevant components, correspondence relationship between the logical and physical components of the entity, flow relationship in business applications.Moreover, it can achieve system monitoring information, display topology according to the condition and so on.In the meantime, it supports for a failure's node position, influences' analysis and fault's backtracking function.Visualization system data is from the configuration of the management module including its backend using Struct2+Hibernate4+Spring3 technology and its front visualization module using Unity3D engine.The whole visualization system has the characteristics of easy to use, good expansibility, service-oriented, configuration support and intuitive data presentation.