With the focus on the relationship between the organic matter and uranium minerlization of typical uranium deposits in the Ordos Basin, this study discussed the occurrence, characteristics and maturity of the coal. The results show that the evolution degree of organic matter is low and still in the low stage of mature, indicating it is favorable to the adsoption of uranium. Overall, organic matter in coal is closely related to the uranium mineralization,and positive correlation between the contents of uranium and organic matter coal suggest their adsorption form. The study of oilgas inclusions in this region indicates occurrence of multiple calcite cemetation,along with multiple development of oilgas inclusions,especially abudant latestage oilgas inclusions in late cementation calcite minerals.It can be concluded that it could have the migration and accumulation of oil and gas in this time, and the formation of uranium deposits is closely related to the filling and complexation of organic fluid or reducing gas in orebearing sandstone. Therefore, the organicrich fluid and reducing gases are of great importance for the uranium enrichment and precipitation.