In the Kuqa River area, the kerogen maceration of the Triassic-Jurassic may be divided into 5 assemblages and 12 subassemblages based on its distribution characteristics. The evolution of paleoclimate during sedimentation of the Triassic-Jurassic inferred on the basis of ecology of sporopollen’s plants is: semi-arid (Ehuobulake Formation)→semi-humid (Lower Karamay Formation)→humid (Upper Karamay Formation－Kezilenur Formation)→semi-arid, semi-humid (Upper Kezilenur Formation－Lower Qigu Formation)→semi-arid (Middle-upper Qigu Formation－Kalaza Formation); and the evolution of paleoclimate type is: tropic-subtopic (Ehuobulak Formation－Taliqike Formation)→subtropic－warm temperate (Ahe Formation－Kezilenur Formation)→subtropic (Qiakemake Formation－Kalaza Formation). On the basis of maceration of kerogen, sedimentary characteristics and other data, it is inferred that lacustrine deposition was most developed in the Ehuobulake Formation, Upper Marker Member of the Karamay Formation, middle-lower part of members 2 to 4 of the Huangshanjie Formation, Upper Marker Member of the Yangxia Formation and Qiakemake Formation of the Triassic-Jurassic in this area. The Qigu Formation is the principal period of  flood lake development, and the Taliqike Formation, lower Yangxia Formation and Kezilenur Formation  are three principal periods of swamp development (mainly fluvial swamps, such as back-bank swamp and interdistributary swamp).