The invention provides a fullerene electric heating synthesizing device, and relates to a fullerene synthesizing device. A vacuum system, a heating assembly, a cooling system and a gas control systemare arranged; the vacuum system is provided with a vacuum chamber and a vacuum detector to form a vacuum environment required for synthesis; the heating assembly is provided with a graphite tube, a graphite electrode, a graphite gasket, a copper cold water jacket, a heat conductive insulating ceramic plate and a fixing plate, the heating assembly is fixed at the bottom of the vacuum chamber, a carbon cluster generated by the graphite tube through high temperature heating reacts with reaction gas supplied by a gas control system to synthesize fullerene, and exhaust gas generated is absorbed bythe gas control system; circulating water of the cooling system is connected to the copper cold water jacket through a pipeline and cools the heating assembly. The power can be controlled by adjustingthe voltage to control the reaction temperature; the temperature controllability is achieved compared with a graphite arc method. The cost of synthesis is low, and the device has good safety and convenient operation.