Abstract:We obtain the Receiver functions of 609 broadband seismic stations in south China block and adjacent areas from about 900 teleseismic events(M>5.7) during 2007 to 2012. By analyzing the waveform changes of the receiver functions, we can understand the crustal structure characteristics under each station. Using the H-κ stacking and searching method, we obtain the crustal thickness and velocity ratio beneath the stations. Results show that the crustal structure of the study area presents a gradual and complex change from coastal to inland and the crustal thickness also presents a gradual increase trend from coastal to inland and from south to north. Guangdong, Fujian, Zhejiang, Shanghai, Jiangxi, Guangxi, southern Anhui, central and eastern Hubei, central and eastern Hunan and southeastern Yunnan in the study area are mainly represented by standard receiver functions. The crust is relatively stable, and the thickness of the crust is generally below 35 km, which is close to the Earth average model. The western Hubei, the western Hunan, Guizhou and the eastern, central and northern part of Yunnan mainly show transitional receiver functions. The thickness of the crust in this area increases gradually from about 35 km to about 45 km, corresponding to the area of crustal thickening and deformation. Chongqing, Sichuan, southern Shaanxi, southern Gansu and northern Yunnan in the studied area mainly show complex receiver functions. The crustal thickness increases from 45 to 60 km, or even 70 km, corresponding to the region with intense crustal thickening.