Li3V2(PO4)3/Cu composite cathode material was prepared via sol-gel method by adding of 1.8 wt% Cu powder into the precursor solution. The structural and physical properties, as well as the electrochemical performance of the material were compared with those of Cu-free Li3V2(PO4)3. X-ray diffraction showed that Cu did not enter the crystal structure of Li3V2(PO4)3. The Li3V2(PO4)3/Cu composite material had a higher electronic conductivity comparing with that of Cu-free Li3V2(PO4)3. Electrochemical impedance spectroscopy showed that the adding of Cu decreased the charge transfer resistance of the electrode. In addition, the lithium diffusion coefficient was prominently enhanced from 1.3×10-9 to 2.8×10-8cm2 s-1. Based on the these advantages, the Li3V2(PO4)3/Cu composite material exhibitedmuch better cycling performance than the Cu-free Li3V2(PO4)3.