Supercapacitors (SCs) are known as one of the most promising energy storage devices due to their high-power density and excellent cycle stability. The performance of SCs is closely related to the electrochemical performance of electrode materials. The widely-used electrodes are carbon-based materials and their derivatives. Carbon materials contribute energy storage based on double layer capacitance associated with ion adsorption and desorption, achieving excellent power density and cycle stability. However, they lack in high capacitance because of limitation of surface area. Instead, Fe-based Prussian blue (PB) is a promising pseudocapacitive material with open frame structure and high theoretical capacitance, but the poor electrical conductivity limits its rate performance and cycle stability. Combining PB with carbon materials is considered as an effective solution to develop advanced electrode composites. Herein, nanoporous carbon (NPC) derived from lignite has been prepared with high specific surface area and good electrical conductivity. Then, Fe-Prussian blue was successfully loaded on NPC via co-precipitation method to obtain Fe-Prussian blue@ nanoporous carbon composite (PB@NPC). The fabricated PB@NPC composite possesses high specific surface area, high specific capacitance and excellent cycle stability.