Trace elements and rare earth elements (REE) of sedimentary rocks, especially argillaceous rocks, have high sensitivity on hydrological changes of sedimentary environment, therefore, they can be used as an effective method to study paleoclimate and paleoenvironment and trace the source province and tectonic settings during deposition period. In this paper, twentyeight argillaceous rock samples collected from the Jurassic Yan’an and Zhiluo formations in the northern margin of Ordos basin were analyzed for REEs, trace elements and clay minerals by means of ICPMS and SEM analysis to investigate the effect of redox conditions of the Yan’an and Zhiluo formations and structural setting and paleoclimate change of provenance on uranium mineralization. The results shows that (1) the characteristic values and ratios of trace elements and REE such as (B, Sr/Ba, B/Ga), (U/Th, V/V+Ni, V/Cr, Ni/Co) suggest that the bottom water was fresh and oxidation environment during the whole time Yan’an and Zhiluo Formation deposition. Fe2+/Fe3+ ratio suggests that the diagenesis environment of Yan’an Formation was regional reduction block. However, the upper Zhiluo Formation was in a strong oxidized background. (2) The sedimentary sequence from the Lower Jurassic Yan’an Formation to Middle Jurassic Zhiluo Formation represents a complete sedimentary cycle and the sedimentary facies, including fluvialalluvial fan facies(Lower Yan’an Formation), lacuserine deltaswampy facies (Middle and Upper Yan’an Formation),braided stream facies (Lower Zhiluo Formation), meandering river facies(Upper Zhiluo Formation). The Sr, Cu,Sr/Cu, FeO/MnO, Al2O3/MgO ratios and the clay mimerals’ vertical variety indicate that the paleoclimate and paleoenvironment experienced a changing process from warmhumid climate to drywet alternation, arid and semiarid climate. (3) Chemical Index of Alteration (CIA) indices and Index Chemical Variation (ICV) indices reflect that the Yan’an Formation was in relatively stable geotectonic background during middle Jurassic Zhiluo period, until tectonic activities of the margin of Ordos basin started to quickly increase. (4) LaThSc, La/YbΣREE and F1F2 discrimination diagrams indicate that the provenances of Yan’an Formation and Zhiluo Formation were derived mainly from the upper crust (felsic rocks), with a certain amount of alkali basalt addition. The geotectonic background was dominated by continental margin (active continental margin, passive continental margin), and part of material shows a continental island arc setting. The above research results reveal that the transformation of paleoclimate and the oxygencarrying ancient water played an important geological role in formation of coal and sandstonetype uranium mineralization.