In this study,based on reliability theory and the experimental analysis of structure and materials,we combine the existing dynamic structure resistance coefficient function and the corresponding relation between different states of limit damage and structural resistance to establish a dynamic structural vulnerability function,based on the time factor (internal effect of materials,loads,and environmental impact) and event factors,including seismic events and seismic reinforcement.By studying the impact of demolition and new construction on the number and type of urban structures,we identify the change characteristics of various future urban structures and develop a dynamic seismic damage matrix for building future cities.Through the offsite application of the group seismic damage matrix and by examining the impacts on the matrix of demolition and construction,we develop a dynamic seismic damage matrix for a target city is formed,based on existing seismic damage predictions for urban structures and the application of reliability methods in vague mathematics.This matrix could facilitate the analysis of earthquake risks and the need for anti-seismic precautions in structures.