Systematic sampling and geochemical analysis of the oil shale member of Dingqinghu Formation show that SiO₂ are low, K₂O/Na₂O ratios are relatively high, Al₂O₃+Fe₂O₃ are in the range of 6.43%～10.28%, and Al₂O₃/(Na₂O+K₂O) values are between 1.7 and 4.91, indicating that the oil shale contains mafic components and more stable components. Chemical indexes of alteration (CIA) are between 65 and 85, and Th/U ratios are concentrated in the range of 0.97～3.38, suggesting that the provenances of oil shale had experienced relatively moderate weathering and were in a warm and humid climate environment. Sr/Ba ratios are between 0.45 and 0.82, V/(V+Ni) ratios are between 0.46 and 0.68, and Th/U ratios have an average of 0.59, indicating that the oil shale was formed in a fresh water and anoxic lacustrine environment. Warm and humid climatic conditions, abundant biological sources, fresh water and anoxic environment were important for the formation of Lunpola oil shale.