  In this paper, we investigate the holographic dark energy model with
interaction between dark energy and dark matter, from the statefinder
viewpoint. We plot the trajectories of the interacting holographic dark energy
model for different interaction cases as well as for different values of the
parameter $c$ in the statefinder-plane. The statefinder diagrams characterize
the properties of the holographic dark energy and show the discrimination
between the two cases with and without interaction. As a result, we show the
influence of the interaction to the evolution of the universe in the
statefinder diagrams. Moreover, as a complement to the statefinder diagnosis,
we study the interacting holographic dark energy model in the $w-w'$ plane,
which can provide us with a dynamical diagnosis.
