In 2015, the project “Investigation on the Construction of Social Policy Support System for Urban and Rural Difficult Households in China” and the “Network Construction Dynamic Monitoring Platform and Deep Observation Network Construction Survey” commissioned by the Ministry of Civil Affairs were undertaken in 29 provinces, 148 districts and counties, and 5,000 in the country. Village housing conducts household or community surveys. The project used computer-aided interviews to survey 29,282 questionnaires. In 2016, on the basis of the first two projects, the two sides added the “Research on the Status of Rural Left-behind Mobile Children and the Elderly Support Service and Relevant Policy Support System”. A total of 24,552 basic data were collected, and the data quality was highly recognized by industry experts. Evaluation. In 2017, based on the successful cooperation in the previous two years, the two sides conducted a follow-up survey on two projects in 2015, and finally successfully tracked 19,030 questionnaires. The series of survey data is a comprehensive, true and systematic tracking and analysis of the state of community governance in China, to understand the economic situation and social policy needs of urban and rural families, to understand the living conditions and society of rural left-behind elderly and children, urban migrants and children. Policy needs will play a very important role.