To provide a conductive material which is flexible and can be expanded and contracted with less changes of its electroconductivity in the case of its expansion and contraction.

The conductive material is expandable and contractable made by spiral threads consisting of organic fibers which are made by being calcined and carbonized. Moreover, this is expandable and contractable and flexible of the cloth body which is made in the form of woven fabric, knitted fabric, or nonwoven fabric made by the spiral threads consisting of organic fibers which are made by being calcined and carbonized.