The granodiorite of the article reports located in 10km east of Bayanhushu Inner Mongolia. The tectonic position belongs to Late Paleozoic fold belt of Xilinhaote of the middle in central Asian orogenic. The age of this pluton is 236.1 3.4Ma by using LA ICP MS U Pb zircon dating method. In this granodiorite, the content of SiO2 is 66.93%~67.22%, Al2O3 is 15.13%~15.53%, K2O is 2.47%~2.56%, Na2O is 4.35%~4.46%, and the A/CNK is 0.94~0.95, this petrochemistry data indicate that the granodiorite belongs to the Partial aluminum and calc—alkaline series, and depleted in high field strength elements, the content of Sr is (416.6~425.7) 10-6, Sr/Y is 42~49, this geochemical characteristic is the same as high Sr low Y of the adakite or high Sr granite. The εHf(t) values and two staged Hf model age of the granodiorite is 13.3~15.7, 249~356Ma and 258~422Ma. Synthetical analyze shows, The granodiorite is the product of the thickening of partial melting of crust after closed by Siberian plate and North China plate.