Water logging disaster has enormous impact on urban sustainable development. Simulation, risk assessment and emergency evacuation for urban water logging disaster are this paper’s research focuses. Using GIS component ArcEngine, Microsoft Visual Studio 2005, SQL Servrce2000 product research and development of urban water logging disaster eme rgency response decision support system to realize the functions of urban water logging disaster simulation and visualization based on three-space model, urban disaster risk assessment product and emergency shelter and relief supplies optimize layout. This can provide emergency management decision-making basis for urban water logging disaster.