Based on community’s countermeasures for the COVID-19 Epidemic of X Subdistrict Office in Shanghai during the period of Level-1 response to public health emergencies in 2020，this article introduces main measures including collecting residents’ information，managing entrances，supervising and serving residents who are in home quarantine，etc.，and generalizes roles of different sides in the community preventing and controlling system. The author argues that a particular construction of “party leading，government dominating，co-preventing，deeply mobilizing，and widely participating” has formed，with features of systematization，detailed management，humanization，institutionalization，social participation and informationization. To build new structure of social governance，tendencies including logic of strong state，roles of the party and participation by internet should be mentioned and deeply analyzed.