Abstract:Eleven seismic data recorded by DZW gravimeter at Yichang center station from 2020 to 2022 were selected to analyze the co-seismic response characteristics.The results show that the delay time of DZW gravimeter coseismic response is directly proportional to the epicenter distance, and the response duration is positively correlated with the magnitude.For the earthquakes with similar epicentre distance and different magnitude, the maximum response amplitude and duration of DZW gravimeter are proportional to the magnitude.The maximum coseismic response amplitude of the DZW gravimeter is related to the magnitude and epicenter distance.