South Qilian basin is located on the Caledonian basement basin,marine Perntian constitute the main part of the Pemuan, the Permian Basin through the sedimentary characteristics of the analysis of the region and the Permian sedimentary environment filling pattern, comprehensive development that Permian carbonate platform facies, littoral, shallow continental shelf, deltaic, fluvial fades 5 and experience of the Early Pemuan lemengou period of depression basin Caodigou period on the edge of depression basin and hajier-zongshigong penod even the depression of the residual public epicontinental basin.