After the study of the metamorphic core complex of the Xuefengshan,Hunan Province,the writers found that it is similar to the Cordilleran counterpart in structure,deformation mechanics,and detachment features,except for that its upper plate is composed of Neoproterozoic very low-grade metamorphic rock and Paleozoic strata and that the complex was formed between Late Devonian and Early Carboniferous.Its control of the Woxi vein gold deposit is discussed in the paper.