The illness course and symptoms of dementia are usually very long and characterized with behavioral, psychological and physical changes. Family caregivers' stresses change during the illness trajectory as well. Thus, the needs of the elderly with dementia and their family caregivers differ in different stage of dementia, and the services they require are multidimensional. Currently, the use of the services in Taiwan is relatively low but the fact shows there are many demands. Therefore, both the confirmation of care need for elders with dementia and the integration of service utilization resources are important fundamentals to develop and construct the care model for dementia.