Social assistance is related to the basic life, food and clothing of the people in need, the livelihood of the people, and the popular support of the people. It is a comprehensive and basic institutional arrangement to ensure the basic livelihood, promote social equity, and maintain social stability. Since the 18th National Congress of the Communist Party of China (CPC), with the basic completion of the social assistance system with Chinese characteristics of hierarchical classification and urban-rural integration, China's livelihood security network has become more and more firmly woven, security policies have become increasingly refined and precise, and social assistance security work such as minimum living security has gradually changed from "looking for policy" to "looking for policy". Not long ago, the Ministry of Civil Affairs, together with the Central Agriculture Office, the Ministry of Finance and the National Bureau for Rural Revitalization, jointly issued the Notice on Further Improving the Social Assistance Guarantee Work such as the Minimum Living Security, which covers five aspects, namely, increasing the efforts to expand the coverage of minimum living allowances, further strengthening temporary assistance in emergencies, improving the working mechanism, optimizing and standardizing the handling process, and implementing security measures, We put forward clear requirements for further improving the social assistance coverage, such as the minimum living standard, and strive to timely include eligible people in need into the scope of social assistance, consolidate and expand the achievements of poverty alleviation, achieve the expansion and efficiency of social assistance, such as the minimum living standard, and make sure that the basic living standard of the people in need is met. In the Notice, whether it is to further relax the conditions of "single person insurance", expand the coverage of people living on subsistence allowances, or emphasize the timely provision of temporary assistance to the people in need affected by the epidemic, or clearly establish a linkage mechanism between relocation and subsistence allowances to ensure that "the minimum living allowances should be guaranteed", each specific requirement provides a refined and precise operation guide for the social assistance coverage. To implement the spirit of the Notice, it is necessary to give full play to the social assistance guarantee function, change "people looking for policies" to "policies looking for people", timely find and timely help people in trouble, so that the social assistance guarantee policy can better benefit everyone in need. To realize the transformation of social assistance from "people looking for policies" to "policies looking for people", the key is to establish and improve the active discovery mechanism at the grass-roots level. The most underprivileged groups in the society are usually the people who provide basic security, such as orphans among children, children who are actually not supported by others, disabled children, especially poor groups among the elderly, as well as the people with special needs for subsistence allowances and the disabled. They often lack the awareness and ability of seeking help, and need timely discovery and rescue from grass-roots workers. The Notice clearly stated that it is necessary to improve the dynamic monitoring of low-income population and the mechanism of layered and classified assistance and assistance, and required that "early warning indicators should be set for serious illness, disability, school attendance, unemployment and other situations". It is precisely to find people who really need help at the first time, and actively match the existing security policies to help them overcome life difficulties and out of physical and mental difficulties according to the rescue population and rescue needs. Social assistance should be able to stand the test of meeting and checking accounts with ordinary people directly. In reality, in addition to screening the low-income population at risk through data cross comparison, correlation analysis and comprehensive evaluation, many places have also established various forms of visiting service mechanisms for people in need. Ninghai, Zhejiang