To provide a more inexpensive rubber composition capable of obtaining high performance, in particular, high disruption characteristics by improvement of a softening agent component as compared with conventional.

In the rubber composition, a mixture of asphalt and a vulcanized rubber powder is formulated relative to a diene based rubber, and an occupying ratio of a butadiene rubber in the rubber component contained in the vulcanized rubber powder is 50% or higher. The mixture of the asphalt and the vulcanized rubber powder can be prepared by mixing/stirring them at 120C or higher for 1 hour or longer. As the vulcanized rubber powder, the one obtained from a waste tire can be preferably used.