Abstract: In this paper, uranyl species sorbed on anion exchanger from HC1 solution are throughly studied by equivalent accounting, determination of distribution ratio and IR spectra. The equivalent accounting method is applied under flow conditions for the anion exchange resin loaded solely with anion chloride species of uranyl by means of column chroma-tography, and also under batch conditions for resin loaded with anion chlaride species of uranyl as well as chloride ion. It is experimentally found that the charge of the species is approximately equal to 2 and the ligand number of UO2 2+ is approximately equal to 4.The results of the determination of the sorption equilibra of uranyl show that the dependence of distribution ratio of uranyl on the concentrations of uranyl in anion resin supports the assumption that uranyl species sorbed on anion resin is (UO2Cl4)2-. The IR spectra are recorded with DIGILAB FTS-15C infrared spectrometer in the region from 4000 cm-1 down to 400 cm-1. The asymmetric stretch, v3 of the uranyl group is infrared active. The band at 914.3 or 918.1 cm-1 is assigned to the anion (UO2C14)2- sorbed on anion exchange resin from solutions of various concentrations of HC1.In conclusion, the predominant species sorbed on anion exchange resin is (UO2C14)2-from solutions of various concentrations of HC1.