The Chanziping and Daping gold deposits, located in Qianyang and Hongjiang County, respectively, are two representative ones in the Xuefeng Mountains, western Hunan Province.The quartz RbSr isochron ages of the two deposits are 205.6±9.4Ma and 204.8±6.3Ma，respectively，they are consistent in dating errors with the zircon SHRIMP UPb（222.3±1.7Ma） of the Huangmaoyuan biotite granite in the periphery of the two orefields，which indicates that the diagenetic mineralization happened during the Indosinian Period and the gold mineralization might have been related to regional thrustnappe events and accompanying acidic magmatism；the two deposits should be attributed to magmatic hydrothermal origin, rather than ductile shearing belt type or structural alteration type.