Abstract:This paper uses the method of receiving function to inverse crustal thickness and wave velocity ratio of 26 wide frequency seismic stations in Henan and its adjacent areas. The research results show that:The distribution of crust thickness and Poisson's ratio in Henan Province is closely related to the geological structure,which demonstrates itself in:(1)In the Taihang Mountains fault block,the crustal depths range from 31.8km to 40.2km and crustal thickness is gradually increasing from east to west. At Yongnian station and the majority of the stations in the northeast,the Poisson ratio is from 0.23 to 0.25 for a larger range of granite distribution here,mainly high content of quartz and feldspar. At Jiaozuo station,Shexian station and Xunxian station,the Poisson's ratio is from 0.26 to 0.27,which shows that the felsic and Iron,mafic composition contents are equal in amount. (2)In the eastern block of Huanghuaihai Plain,the crustal thickness is from 28km to 34km. At Zhumadian station,Jianshan station and Xunxian station,the crustal thickness is 30.5km,34.9km and 31.8km respectively,The Poisson's ratio in the region is relatively stable,and the data is between 0.24 and 0.25. (3)Qinling Mountains block has strong fault activities,the thickness of the crust beneath Lushi station is 38.4km and the poisson's ratio is 0.23. This reflects that the Yanshan movement helps the crust in the area produce uplift folds and mantle acid magma intrusion activities. The crustal thickness in northern part of the Nanyang Basin is 28.8km,and Poisson's ratio is 0.29. It indicates that the crustal lithology is mostly neutral and basic rock. In crustal rocks iron and magnesium composition increases significantly,because the mantle material deep intrusion changes the rock properties in some areas. (4)Dabie Mountain's block is located in the Su-Lu(Jiangsu-Shandong)-Dabie ultrahigh pressure metamorphic belt. There is a crustal thickness gradient belt between Shangcheng station in the northern part of the Dabie Mountain and Jinzai station in the Dabie Mountain. The crustal thickness is from 31.8km to 35.8km,but Poisson's ratios show negative growth and fall from 0.27 to 0.24. This reflects the prominent features of thrust nappe structure in the continental fold belts.