[en] Hui'anbu Uranium deposit produced in the Zhiluo Formation sandstone of middle Jurassic series in Ordos Basin. The methods of radioactive α-track camera and electronic probe are used to study uranium minerals existing forms that are main adsorption with a few pitchblende. The paragenetic association of Uranium minerals has eight forms. Absorptive uranium is related with the Fe-Ti oxide, pyrite and clay. Fe-Ti oxides are mostly fragmentary white titanium rock containing uranium. Some altered Fe-Ti oxides are replaced by pyrite and retain metasomatic texture obviously. Fe-Ti oxide replaced by pyrite in the rock has a strong reduction and adsorption capacity, so it becomes a favorable medium of enriching uranium. The uraniferous Fe-Ti oxide and its alteration products are the major enriching uranium reagent. Through analyzing mineralization, the existence of plenty Fe-Ti oxides may be one of the evaluation criteria of ore-bearing potentiality. (authors)