The cathodic behavior of Cr(II) ion at W electrode in NaCl?KCl molten salts at a temperature of 710℃ was investigated by cyclic voltammetry, square wave voltammetry, chronopotentiometry. The results indicates that the reduction process of Cr(II) to Cr at W electrode was a one step process: Cr2++2e?=Cr. The reduction of Cr(II) is a quasi-reversible process controlled by diffusion mass transfer. The diffusion coefficients of Cr(II) calculated by the data of cyclic voltammetry and chronopotentiometry, is 1.27?10?5 and 2.24?10?5 cm2/s, respectively. Potentiostatic electrolysis performed on the W electrode proved the feasibility of electrodepositing metallic chromium in the molten NaCl?KCl?CrCl2 system.