This work presents a novel Study oil electrochemical preparation of Mg-Li-Yb alloys at a magnesium electrode in LiCl-KCl-YbCl3 melts at 743 K. Cyclic voltannograms showed that the reduction of ytterbium(III) ions is a stepwise reaction. The codeposition of Yb and Li takes place at magnesium electrode when the Current intensity exceeds 60 mA in LiCl-KCl melts containing 2 wt% YbCl3. alpha, alpha + beta, and beta phases. Mg-Li-Yb alloys with different lithium contents were obtained by potentiostatic electrolysis at a magnesium electrode from LiCl-KCl melts with different concentrations YbCl3.