Spinel compound LiNi1-xMnxVO4 (0≤x≤0.4) had been prepared by using the moist chemical method. X-ray di4raction spectra showed that the lattice constant increased with x in the LiNi1-xMnxVO4, XPS spectra indicating that Li1s had a chemical shift towards lesser binding energy, and manganese in LiNi1-xMnxVO4 existing as the mixed valence of Mn2+ and Mn3+. The electrochemical charge and discharge testing at a current density of 0.1mA/cm2 between the potentialsof 4.0 and 3.0V vs Li/Li+ in 1mol/dm3 LiPF6/EC+DEC (1:1 by volume) at 25℃ showed that LiNi1-xMnxVO4 cell hasa better rechargeability, but a lower cell voltage of 4.0V vsLi/Li+ than that without the doping sample, and the capacity and the cycle efficiency of the Li/LiNi1-xMnxVO4 cellsincreas ed with x in the LiNi1-xMnxVO4.