To provide a conductive roller for an electro-photographic device used as a developing roller or a transcribing roller or a charging roller to be excellent in stability of electric resistance to eliminate process unstability of bonding agent application unevenness, width dimension, etc., generating a problem in an existing line.

In this conductive roller concentrically formed with a conductive elastic layer in the external periphery of a rotary shaft, an irregular surface is formed in the external periphery of the rotary shaft, the conductive roller connects the conductive elastic layer to the rotary shaft by biting in of the conductive elastic layer in this irregular surface.