In recent years, major public safety incidents occur frequently in smoke-free cities. Under the complex and severe situation, the emergency preparedness capacity of smoke-free cities in China needs to be improved. In this paper, 50 fire emergency plans in smoke-free City F are taken
as samples, and the qualitative comparative analysis method of clear set (csqca) is applied to explore the improvement path of emergency preparedness ability. Three influence paths are obtained to improve the emergency preparedness ability, which are information resource integration mode,
business collaboration pre control mode and system route mode. The results provide reference for improving the effectiveness of pre disaster prevention, enhance the emergency preparedness capacity of smoke-free cities and improving the effect of emergency management.