Recently, the issue of Elderly Outreach Service had become a very important project on elderly welfare in Taiwan. In order to appropriate a huge business of aging welfare service, positive outreach service promoted absolutely important under a relevant policy and agent service gradually mature circumstance. The main programs of community outreach service are as follows; 1.aged day care in community, 2.shortterm care, 3.community lecture, 4.greetings call, 5.welfare consulting, cultural & leisure service as well as at home service etc. This research proceeded its study through the character of institution and situation of outreach service implementation, the subjects of research were 54 registered aging care, nursing care institutions in Taiwan and the data derived from 47 available questionnaires (returned rate 87%) of Taiwan Social Bureau in 1999. The aim of this research tried to understand the different institutions in managing the situation of outreach service for the present. The consequence of research were found: 1.Promoting an outreach service of aging institution-study on participating in institution model; (1) the cultural, leisure and artificial skill programs were the main service long ago, however the institutional day care, temporary care were the primary developing programs in the community and the ”care” were instead of this important trend development (2) a stage of resources integrating to assure the responsibility of consulting information transmission. (3) relevant activities of leisure, cultural programs still occupied certainly the percentage and efficacy on ”participating in institution model” (4) the aged institutes demanded extensively, the institutions could offer universalizing, communizing services for the people to act the social responsibility and efficacy for melting into ”participating in institution model” then enlarged the care centers in the community. 2.institution managed ”out of the institution outreach services”: (1)it was a very important profile to walk up to people in the community from institutions with activities, it was a good way of institutions on marketing and development (2)accompany the community elderly to the out patient was an important outreach service, to respond the demand of senile healthcare in the community (3) the outreach program of aged at home service extended extremely, it had become an important outreach efficacy of institution 3. To meet both merit & defect and difficulty on outreach service promotion: 1.the merit of outreach service promotion were increasing community relationship, corresponding with demands of community people, rate of increase to utilize space facilities, to advance the institution exposed opportunity in public, it would absolutely contribute to the institution on marketing and business promoting; (2) the defect of outreach service promotion mainly were working hours increase, heavy financial burden, life of clients would be disturbed, institutional space had gone crowd and down grade service quality happening... etc would challenge the image of institution; 3. The difficulty on promoting outreach service included; practitioners power, a shortage of finance, a shortage of spaces and facilities were limited development on outreach service. This research suggested; 1 institution had to extend positively outreach service and made this program becoming an important item on the evaluation system; 2 to raise outreach at home care quality and care management system; 3 to empower perpetually caregivers towards the professional channel between registered system and promotion; 4 to budget for the institution and to seek the financial support; 5 to create the promoting educational curriculums in the universities, collaboration with industry and academy to carry out consistency on study & usage.