Abstract:In this study, 66 groups of three、|component acceleration records of the MS7.0 earthquake that occurred in Jiuzhaigou County, Sichuan Province, China, on August 8, 2017 recorded by China Strong Motion Net Center (CSMNC) are analyzed and processed, including the base lines correction and filtering, used for comparing the characteristics of the amplitude and response spectra of the strong motion records. The results show that the peak ground acceleration (PGA) value ranges from 0.98~185 gal, and the largest PGA was recorded by the closest station, 51JZB station. The instrumental intensity of the earthquake ranges from 0.93~6.8, and the comparison between the instrumental intensity and the seismic intensity map of Jiuzhaigou MS7.0 earthquake indicates that the instrumental intensity and macroseismic survey intensity differs in 1 degree. According to the comparison among the observation data, the ground motion attenuation relationship proposed by Huo Junrong, and the ground motion parameter zoning map of China (fifth generation), it is found that the attenuation relationship of Huo Junrong is more suitable for the acceleration attenuation of the Jiuzhaigou earthquake. The horizontal PGA contour map was drawn using the Kreager interpolation method, and the contours near the epicenter show NW distribution.