The Family of Wisdom is a place for daycare of the Alzheimer’s disease association in Taiwan, and the environmental spatial properties is design for the people with dementia. This research using the interview methods, indirect observation, and interval recording to study 14 seniors with dementia in the Family of Wisdom as the objects. The research result as follows: 1. The interpersonal communication and behavioral will be affect, as the physically and mentally deteriorate.2. Provide the different size of activity territories for different level of sickness seniors with dementia.3.Promoting the outdoor activates for the seniors with wandering behavior and moderate dementia (middle-stage), and disability and severe dementia (late-stage), so that can increase their social activities and sensory stimulation to decrease the sickness. Suggest, in the future, should provide more micro- day care center in every community, so the seniors can be aged in place in the familiar environment. Also, can give the rest chance to the caregivers. Finally will reach the idea of aged friendly community.