With the development of the social economy, the public security situation in our country has become increasingly complex and changeable, and public security work is consequently facing higher demands. This paper takes the theory of social management innovation as the entry point and, through methods such as literature review and case study, combs through and introduces the content of the theory of social management innovation. It also analyzes the specific connotations of the theory in public security work and clarifies that the theory plays an important role in the renewal of concepts, introduction of stakeholders, expansion of content, and application of technology in public security work.The paper reviews the typical practices of the theory of social management innovation in the construction of the public security work system, multi-stakeholder governance, and the application of emerging technologies. In light of the existing shortcomings in current practices, this paper proposes two working ideas which aim to provide a feasible path for the future development of public security work.