Since 2010, the Health Promotion Administration, in response to the WHO’s initiative, began the promotion of “age-friendly cities” suitable for the elderly to live and work in peace. Through the 8 domains highlighted by the World Health Organization (WHO), to improve the software and hardware structures, assisting county and city governments to inspect favorable and unfavorable living conditions for aging, and propose effective improvement programs and recommendations. All counties and cities actively responded to this project, with Chiayi City being the pilot city. By 2011, a total of 9 counties and cities joined this project. Then, by 2012, 20 out of the 22 counties and cities around the nation were promoting the age-friendly cities, with the last 2 off-shore islands (Lienchiang County and Penghu County) finally joined in 2013. In just three years, we reached the goal of promoting age-friendly program nationwide, being the nation with the highest coverage in the world.