A laser-induced fluorometric method is described for rapid determination of micro-level uranium in geochemical materials with Modified Anti-interfer- ence reagent for uranium (MAFG).The method is characterized by direct using of the residual solution used in ICP-AES for simultaneous mufti-element de- teimination,therefore no prior sample preparation is required. A simple method for correcting the inner filter effect of iron is proposed. The detection limit of the method is 0.05 ug/g. The relative standard deviation for seven replicate determinations of the standards GSD are ranged from 2.2-7.1%.