PROBLEM TO BE SOLVED: To provide a reformer body which can modify air and water.SOLUTION: A reformer body comprises a reformer cabinet with a hole part for circulation of air or water on its side face, a first electrode and second electrode disposed away from each other in the vicinity of the inside face of the reformer cabinet, a plurality of insulation balls disposed between the first electrode and second electrode, and a first conductive wire and second conductive wire connected to each of the first electrode and second electrode. Voltage is applied between the first conductive wire and second conductive wire of the reformer body to perform modification.SELECTED DRAWING: Figure 1