The urban disaster emergency management is a huge and complicated system engineering.In the paper

the application and advantages of modern information technologies in the urban disaster emergency management are discussed

mainly focusing on the establishment of emergency strategy under the situation of limitation of emergency resource.The paper argued that the purpose of establishing emergency management information system was not for forecasting or estimating but for assisting decision making and quick reacting to what will happen after disasters.Using the SuperMap Object5.0

Visual Basic6.0

SQL Server2000

a local disaster emergency management system has been set up for assisting decision making

resource quick query and investigating vulnerable place of lifeline network.The databases are divided by basic information

spatial data

emergency prevention project and emergency resource

for emergency management servicing.Using existing earthquake damage prediction theory and approaches

the seismic disaster forecasting module of water supply and communication systems were developed in order to supply disaster information or data for decision making in emergency beforehand.The developing process of system proves further that GIS has the advantages at directly displaying

easily operating and assisting exact decision for emergency management of urban disasters.