Li3V2(PO4)(3) has been regarded as an advanced cathode for energy storage because of its various advantages. Nevertheless, the pristine Li3V2(PO4)(3) suffers from a low electrical conductivity which prevents its practical application. In this research, we demonstrate a simple hydrothermal method to synthesize the P-doped graphene-decorated Li3V2(PO4)(3) to enhance the poor electrical conductivity for the first time. Due to the ultrafine Li3V2(PO4)(3) crystals and the conducting P-doped graphene networks, the as-fabricated composite shows outstanding lithium storage performances for energy storage. It exhibits the high reversible capacities of 188.6 and 149.6 mAh g(-1) at 0.2 and 10 degrees C between 3.0 and 4.8 V, as well as the stable cycling property with a high capacity retention of 96.9% after 100 cycles at 2 degrees C. As a result, this facile approach described here can be used to fabricate other electrodes for electrochemical energy storage.