Beijing has a better sense of overall security，with the best “campus security” and the lowest “community security”. The overall security situation in rural areas is much better than that in urban，suburban or urban-rural areas and towns far from the suburbs. The worst security is “far from the suburbs”. Through the analysis of the contingency analysis，it is found that the basic situation of the residents such as education level and physical health status is positively correlated with the sense of security. In addition，through the deconstruction of multiple dimensions，the author analyzes and discusses the relationship between community security，public place security，unit security，campus security and Beijing’s overall security and the specific real dilemma，and proposes targeted countermeasures. We will build a community differential risk forecast prevention and prevention pattern in Beijing community，innovate and improve the new path of social mobilization，and move towards a “characteristic and pragmatic” model of public security governance.