In 2018，Beijing introduced an innovative mechanism in social management area known as “functional departments respond when streets or townships request”（hereafter as “respond when request” for brevity）. Dongcheng District of Beijing attempted to use this mechanism to solve the “final step” problem in local governance，to integrate community resources and to prevent and control the epidemic by optimizing the institution of the party，building comprehensive grid system，constructing comprehensive executive system and improving monitoring system. This mechanism has run into some problems or difficulties while it greatly enhanced the effectiveness and efficiency of local community management. This essay tries to explore the influence of the “respond when request” mechanism on the innovation of community management mechanism in Dongcheng District from three aspects namely the basic experience，main problems and ways to improve of the “respond when request” mechanism in Dongcheng District.