In Taichung there is considerable concern about urban problems, such as the deterioration of living conditions, overcrowding and empty dwellings, the congestion of traffic, the shortage of open space and many other aspects of the urban social, economic and environmental situations.  Most of the existing planning methods in this context addressed only one or two of the three aspects.  The purpose of this study is therefore to develop an integrated framework for establishing an urban ecological system to maintain a balanced relationship between human needs and urban ecology.  A dynamic simulation model, combining urban ecological theory with the techniques of system dynamic, is suggested so that the multiple objectives of urban development can be pursued sustainably to achieve a better quality of life for every citizen, now and for generation to come.