An embolic coil configured in such a manner that the risk that a stretch preventing wire breaks is very small even if the embolic coil is wound to a diameter smaller than the diameter of a secondary shape of the coil imparted thereto and also in such a manner that the embolic coil has excellent deliverability. An embolic coil is configured in such a manner that a stretch preventing wire and a coil, a part or the whole of said coil being coarsely wound, are affixed to each other at at least two different points. The portion of the stretch preventing wire which is located between the two different portions is provided with a portion to which a stretchable shape has been imparted.
