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1.ObjectiveThe Qinglong area is located in the Easte Yunnan-Weste Guizhou uplift tectonic belt, west of the Zishui fault zone and north of the Youjiang basin.There are many sets of organic-rich shale in Longtan Formation in Qinglong area.Many predecessors did a great deal of research on the geological features of Permian coal fields in Weste Guizhou (Mei MX et al., 2004;Dou XZ et al., 2012), but lack of the research on sedimentary background and distribution characteristics of organic-rich shale in Longtan Formation.Therefore, this study focuses on the analysis of the sedimentary environment of the Upper Permian Longtan Formation in Qinglong area.