This study aims to clarify the structure of community life of the group home based elderly with dementia through investigation and analyses of their outgoing activities. The results are as follows : 1) Following items in regard with the GH residents' outgoing activities were categorized : the places to go, the contents of outgoing activities and the reasons. 2) The subject GH puts a high value on variety and identity of the residents' behaviors. In this case, the residents' outgoing activities were conducted in the limited area around the GH entrance and in the community. Also, their outgoing acitivities were often conducted spontaneously in the context of everyday life , not in the plans fixed beforehand. 3) In the case of the subject GH, the residents' outgoing activities could be patterned in accordance with their levels of dementia, and ADL. The outgoing activities by the residents with the slight or mid level of dementia and with the high level of ADL were conducted scatteringly in the community. For the ones with the severe level of dementia and the low level of ADL, they were conducted in the limited area. 4)The places for those activities by the residents and by the local inhabitants who show high level of recognition of the residents and of interrelation with the residents overlapped each other in great deal. At the overlapping places, it seems possible to develop association among the local inhabitants and the residents.