At the beginning of the 20th century, due to the call of humanitarianism, a new architectural design method-barrier-free design came into being in the field of architecture. It uses modern technology to build and transform the environment, providing convenient and safe space for the disabled and creating an environment for equal participation. The international research on physical environment accessibility can be traced back to the early 1930s, when Sweden, Denmark and other countries built facilities for the disabled. 196 1 year, the United States formulated the world's first barrier-free standard. Since then, dozens of countries and regions such as Britain, Canada and Japan have successively formulated laws and regulations. China first proposed the construction of barrier-free facilities in March 1985. At that time, China Disabled Persons Welfare Foundation, Beijing Disabled Persons' Federation and Beijing Architectural Design Institute jointly held a seminar on disabled people and social environment in Beijing, and issued an initiative to create a convenient living environment for disabled people. In April of the same year, at the Third Session of the Sixth National People's Congress and the Third Session of the Sixth CPPCC, some NPC deputies and CPPCC members put forward proposals and suggestions on building special facilities for the disabled. 1986 In July, the Ministry of Construction, the Ministry of Civil Affairs and the China Welfare Foundation for the Disabled jointly compiled the first Code for the Design of Urban Roads and Buildings for the Disabled (for Trial Implementation), which was promulgated and implemented in 1989. Construction of barrier-free facilities in developed countries such as the United States, Japan and Hongkong A: The United States first proposed the construction of barrier-free facilities in the late 1950s, when it proposed to facilitate unrestricted employment in disabled soldiers. Later, barrier-free facilities not only served 37 million disabled people in the United States, but also benefited the whole people. The barrier-free environment construction in the United States has been guaranteed by legislation at many levels, and has entered the field of scientific research and education: all kinds of barrier-free facilities are laid out in an all-round way, which is in harmony with architectural art and can be called world-class. Many universities in the United States have set up barrier-free design majors.

While building and transforming barrier-free facilities, Europe emphasizes that residential construction should also be barrier-free, that is, for the disabled and the elderly. 1At the end of 930, Sweden and Denmark began to provide apartments for the elderly.

There are about 200 million disabled people in the Asia-Pacific region. In recent years, Japan, Malaysia, the Philippines, South Korea and other countries have built better barrier-free facilities. At present, barrier-free facilities in Japan are relatively popular, and barrier-free design is included in the unified construction regulations formulated by the state. After the completion of each building, there is a special department to check whether the construction of barrier-free facilities meets the requirements. In some public facilities, especially shops, different levels of barrier-free design are realized according to the size of the building area. For example, large and medium-sized commercial buildings with an area of 1500 square meters are required to provide special parking lots, toilets, elevators and other facilities for the disabled and the elderly.

The Code for the Use of Disabled Persons in Hong Kong has been revised several times from 1976 to 1984. The barrier-free facilities of buildings, roads, buses, buses and subways in Hong Kong are all perfect. All roads have stone ramps and warning blind roads, and there are traffic lights at intersections. People in wheelchairs can achieve barrier-free access.