Abstract: The electrocrystal growing mechanism of zirconium during electroplating was thoroughly studied in the molten fluoride system consisting of K₂ZrF₆ dissolved in FLINAK (KF:NaF:LiF, 42.0:11.5:46.5 mol). Steady polarization experiments indicated that the electrodeposition of zirconium depended on the nature of the electrode materials used. In the case of vitreous carbon electrode, the early stage of metal deposition was shown to be controlled by an electrochemical nucleation process. Chronoampertric measurements showed that the potentiostatic growth transients corresponded with a process of instantaneous nucleation and subsequent hemispherical growth in the melt. It was indicated that zirconium deposit grew in the way of sorewflaw crystals. A filiform microstructure was demonstrated by X-ray diffraction in the zirconium deposit; the preferred orientation was along Zr<110>. In a word, the electrodeposition process of zirconium depended on the electrochemical technologic case and the zirconium deposit with different preferred orientations could be obtained according to the deposition process.