The Changing role of urban authorities and organizations for improving children-friendly settings In the process of child-friendly design in the community, urban authorities can cooperate with social organizations and universities. By purchasing social organization services, the local government provides public space, and social organizations help organize residents to carry out space reconstruction, so as to provide public activity places for children. In the early, the project is led by social organizations, encouraging residents and other social resources such as universities to participate, gradually to cultivate residents’ awareness of participation. In the late, a self-organizing residents is established to reshape neighborhood space. Taking the planning practice of the child-friendly schoolyard as an example, it is aimed at the traffic problems and public space problems of children going to school. First, to set up workshop to attract more parents and more departments to participate. Second, to develop the pin map APP to collect the route data of children going to and from school through the Internet. Based on this, planners will customize bus routes, pedestrian bus routes and chronic traffic organizations, and relevant departments will be responsible for making corresponding traffic plans, formulating management regulations and establishing safety mechanisms. Third, Hand-drawn map of the school district is designed according to children's preferences, and the most interesting and dangerous or fearful places around the school are collected to provide children's real wishes for the optimization of the plan. Fourth, the questionnaire survey is designed to provide the most direct and effective Suggestions for the design of the scheme. Fifth, through the wish small note, listen to the children's aspirations design plan. Sixth, theme painting popularize planning knowledge for children, at the same time, it can collect children's painting works for road signs and traffic guidance, enrich the fun and identification of the scheme design.