Abstract: Modern city has integrated all kinds of material, technical, cultural and social factors, which have made up the complex system through coupling of "social system" and "technical system". Based on the perspective of "society-technology system", through the analysis on the text of Emergency System Development Plan of Beijing during the "12th Five-Year", it summarizes Beijing's capacity building in emergency response and concludes that the policy innovation shows up in design of the city's resilience, polycentric governance and comprehensive precaution. It aims to provide references for subsequent development planning of other local emergency systems.