According　to　the　accurate　and　practical　damage　assessment　method，the　damage　degree　of　the　seismic-damaged　structure　can　be　quantified　in　real　time，and　the　structural　repair　and　reinforcement　can　be　effectively　guided.　In　view　of　the　actual　engineer‑　ing　conditions　and　the　shortcomings　of　the　existing　damage　assessment　or　identification　method　in　terms　of　accuracy　and　feasibility，a　generalized　damage　assessment　method　is　proposed　based　on　the　traditional　elasto-plastic　energy　dissipation　difference　ratio　meth‑　od，which　eliminates　the　influence　of　mass　by　shear　ratio.　The　dynamic　damage　assessment　of　structure　can　be　realized　only　by　seis‑　mic　signal　and　structural　dynamic　response.　On　this　basis，a　method　is　proposed　to　deduce　the　ideal　elastic　response　of　the　structure　by　using　the　foreshock　signal　and　Kalman　filter　identification　technology，and　to　realize　the　real-time　damage　assessment　of　the　whole　structure　and　floors　by　using　the　main　shock　signal.　Taking　two　reinforced　concrete　frame　structure　as　analysis　examples，the　results　show　that　the　proposed　method　can　accurately　indicate　the　dynamic　evolution　process　of　the　overall　damage　and　the　distribu‑　tion　of　weak　stories.　Compared　with　the　traditional　elasto-plastic　energy　dissipation　difference　ratio　method　and　the　damage　assess‑　ment　method　based　on　frequency　change　rate，this　method　has　good　engineering　practicability　and　can　provide　effective　guidance　for　the　rapid　damage　assessment　of　actual　earthquake　damaged　structures.　©　2023　Nanjing　University　of　Aeronautics　an　Astronautics.　All　rights　reserved.