In this paper, the Lie symmetry analysis method is extended to deal with the nonlinear
time fractional Fokker–Planck (FP) equation with Riemann–Liouville derivative. The
Erdélyi–Kober fractional derivative which is depending on a parameter α, is used for
the reduction of FP equation. Symmetry reduction is provided and some exact analytic
solutions to the time fractional FP equation are investigated by virtue of the reduction
method introduced by M.C. Nucci.