  In this paper we have studied particle collision around a spinning dilaton
black hole in 2 +1 dimensions. This black hole is a solution to the low energy
string theory in 2+1 dimensions. Time-like geodesics are presented in detail
and the center of mass energy of two particles collision at the horizon of a
spinning black hole is considered. We noticed that there is a possibility of
the two masses to create infinite center of mass energy.
