Taiwan has been transformed into an aged society. The elderly who enabling the ”successful aging” concept, need a healthy, comfortable, and independent life. Taiwan society has to adjust all social welfare services for elderly, combined with the construction of many public facilities in the city, to meet the needs of the elderly. The World Health Organization (WHO), published ”Global Age-Friendly Cities: A Guide”, that indicated 8 indexes for promotion of elderly-friendly cities. Whereas the indexes of barrier-free and safe public space, public transport, housing, communications and information, and community projects were explored for realized feasibilities on Taiwan regions. We analyze the WHO Age friendly city Indexes relating to buildings and the urban environment, and set up parameters for planning of elderly-friendly cities in Taiwan, according to the development of Taiwan urban environment. We investigate reference literature, survey data, regulations issues, and facilities cases that of WHO age friendly city, in order to analysis, and explore subjects as world thought changes, policy concepts, and the facility support systems. The results show that urban environment has to be improved in order to satisfy demand for elderly. The application of refitting of aging houses, aged-friendly community, as well as the healthy cities concept all were combined into concepts of the age friendly city. Global competitiveness of the city and the efficiency of public construction investment are also benefited the realization of age friendly city. The core concept of aged-friendly community is aging in place. Aging in place in conjunction with community-cooperation enhanced communication, increased social capital, and realized the aged-friendly cities. The indexes of age friendly city for Taiwan urban space and facilities are required to be adjusted the contents.