Abstract: The paper discusses the lateral and vertical sedimentary features of the Pemian System developed during the stages of Qixia,Maokou and Changxing on the boundary of Jiangsu-Zhejiang-Anhui province. It is suggested that a series of sedimentary-structural models with regularity of successive extensionally faulted troughs occurred in the Permian System of the region due to the expansion of Paleo-Tethys sea and the extension undergone in the interior continental crust.