It has been nearly a half century since Hong Kong Special Administrative Region of China began promoting the accessible environment in the early 1970s. Starting from describing the international transformation on the concept of “Disability”，this paper first sorts out the theoretical development in Hong Kong including “Physically Handicapped and Able-Bodied”，“Barrier-free Design”，and “Universal Design”；Then clarifies the promotion mechanism of the accessible environment from the perspective of policies and regulations，investments and the coordination between different institutions；After that，the achievements on residential buildings，public spaces and tourist attractions are introduced. At last，how mainland China can learn from Hong Kong’s experiences and apply that in construction tasks of related facilities when promoting the accessible environment are discussed.