To provide a portable explosion-proof electric appliance to prevent ignition caused by inside crashing sparks which happen when dropped and discharge by static electricity.

By housing a circuit board of the electric appliance within a container-shaped hard resin case 1, 2, the portable explosion-proof electric appliance can prevent ignition toward an outside atmosphere. Furthermore, at least a part of the outer skin of an outer case for protection 11, 12 covering the hard resin case 1, 2, is composed of a leather of natural source whose electrical resistance is within the range of 0.1 G to 0.9 G ohms.