Abstract: The study fault is located on the northern piedmmont of the Dabie mountain in the western part of Anhui Province with a variety of mylonite zone found on the both flanks.The mylonite zones are parallal to foliations on the axial plane of early fold zone,which was deformed through late folding.The mylonites prove to have formed in the priod of the second-stage tectonic slip in the Proterozoic rather than a cause of the fault rock.A suite of brittle-deformation related imbricate thrust can be found on the southern side of the fault in question along with some ramps.The study fault and these imbricate thrusts cut through the folds consisting of the mylonites.This paper also discusses active block in this region.