Waste sorting is not only related to the quality of life of residents, but also affects the sustainable development of society. It is also a "touchstone" to test the level of grass-roots governance. From this perspective, the 'key small matters' are not small, often carrying the weight of the' greatness of the country '. Many 'key small matters' are not only the key to promoting the modernization of lifestyle, but also the key to promoting daily life governance. To handle the "key small matters" well, it is necessary to use party building to lead all parties to work together, adhere to problem orientation, ensure precise policy implementation, and explore the establishment of long-term mechanisms, so that the majority of urban and rural residents can truly become the masters and builders of grassroots governance. Guided by party building, promote the coordinated efforts of all parties. The 'key small matters' may seem insignificant, but they are a system engineering that involves multiple links and subjects. If there is a lack of a strong subject coordination and promotion, it is likely that due to different understandings and interests among various subjects, it will not be possible to form a joint force, making "small matters" difficult. Therefore, in the process of handling "key small matters" well, grassroots party members and cadres should take the initiative to serve as "propagandists," "demonstrators," and "supervisors. Grassroots party organizations actively integrate resources such as funds, talents, and technology, create grassroots party building communities, and lead diverse entities to contribute to the success of "key small matters". In addition, the strength of volunteers should not be underestimated. We need to continuously promote the professionalization and standardization of volunteer service management, continuously drive more residents to join the volunteer service team, consolidate the foundation of grassroots governance, and better implement "key small matters". Strengthen problem orientation and implement precise strategies tailored to specific circumstances. The "key small matters" are related to people's daily lives, and relevant governance is based on people's direct experience and behavioral inertia. This requires grassroots governance to make decisions and implement policies that are tailored to local conditions, people, and times, strengthen problem orientation, and accurately implement policies based on real conditions, while clarifying the root cause of the problem, to promote problem-solving. We should adjust and optimize specific measures for related work based on the long-term traditional habits of the region and existing governance resources, especially to avoid disadvantages, leverage advantages, and improve governance efficiency. We should respect the objective differences between different groups and reality, balance the requirements of macro systems with the needs of micro individuals, and make our work more practical and detailed, further demonstrating the human warmth and service intention of grassroots governance. Build a long-term mechanism driven by marketization and education guidance. With the development of social economy and changes in lifestyle, more and more "key small matters" have become issues that need to be addressed in grassroots governance. On the one hand, it is necessary to deepen the understanding and understanding of "key small matters" among members of society through educational guidance, in order to form the maximum possible consensus on the core content of "key small matters"; On the other hand, it is necessary to promote the implementation and implementation of "key small matters" through market-oriented mechanisms, pay attention to exploring the economic attributes of "key small matters", entrust some service related governance needs to the market for regulation and satisfaction, and introduce professional outsourcing services in a planned and high standard manner for grassroots governance