According to the outdoor profile survey,collection of samples in systematic and the organic geochemical analysis technique including rock pyrolysis,residual organic carbon content,kerogen analysis,organic maceral,vitrinite reflectance,gas chromatography of saturated hydrocarbon and transmitted light microscopy,the authors discussed organic matter abundance,type and maturity of T3g carbonate and T2d mudstone outcrop samples in the Southern Qilian Basin,the original sedimentary environment and bio-inputs of o...