The Jurassic greenhouse climate is an important climate warming event since Mesozoic. The global research on this event mainly focuses on marine strata, but less on continental strata. The Jurassic strata have been deposited in Chuanjie Basin in Lufeng, central Yunnan, which provides a good carrier for studying the Jurassic greenhouse climate environment. Methods: The research object of this work is another fully exposed section newly discovered of the Early and Middle Jurassic in the Chuanjie Basin, sampling and analysis of petrogeochemistry, trace elements, etc,the sedimentary facies have been redefined, build the chemical stratigraphic framework of the upper section of the Lufeng—Chuanjie Formation through the longitudinal variation of CIA , B/Ga, U/Th, Sr/Cu , etc. of fine clastic rock samples.Results:Through petro- and trace element geochemical signatures we systematically restored the climate change characteristics of the Chuanjie Basin in the Early and Middle Jurassic, which can be divided into three periods: warm humid—hot dry alternation period in the early and middle Early Jurassic, hot dry period with frequent extreme weather (extreme drought, rainstorm) in the late Early Jurassic(similar to the current tropical grassland climate), and climate stability period in the early Middle Jurassic,identified the response of the T—OAE event in the basin in the upper Lufeng Formation, manifested as the increases of proportion of dark purple red mudstone, extensive development of dolostone, argillaceous dolostone, dolomitic mudstone, and paleosol, significantly reduced supply of sandstone and coarse debris clarified its impact on the mass extinction and rapid burial of dinosaurs, find the culprits are extreme drought, water shortage and short- term rainstorm, and filled the gap in previous research.Conclusions:Based on the study of Jurassic dinosaur burial horizon in central Yunnan, it is found that the abrupt change horizon of climate environment in the late Early Jurassic is equivalent to this horizon, and the sedimentary and geochemical characteristics show that the cluster burial of dinosaurs is closely related to this event.