Research on the Construction of “15-Minute ” Cities under the Health Impact Assessment

China's urban development has entered a new stage of development.With the emergence of urban development needs and problems in the post-epidemic period,health impact assessment is an important topic for future urban development.There are a large number of small towns in China,the current level of construction and development is uneven,the level of public service facilities is uneven,and there is a strong internal need for renewal and transformation.At the same time,small towns are important construction sites for building a walking and healthy “15-minute” cities due to their small urban scale.This article takes Quyang County,Hebei Province as an example,through multi-source data collection such as questionnaire surveys,big data collection,individual behavior logs,combined with data on the behavior characteristics of small towns residents,the distribution of public service facilities,and residents’ individual behavioral needs,scientifically evaluate the current situation of the layout of related facilities in the city,and then put forward targeted construction and optimization measures.From the travel range of residents of different ages,the “15-minute” cities are delineated,and from the perspective of public health,the three aspects of healthy framework—transportation system,healthy patches—public service facilities,healthy substrate—leisure space,construct a Specific “15-minute” citiy.