  In this article, we consider random walk on the infinite cluster of bond
percolation on $\Z^d (d \geq 2)$. We show that the Laplace transformation of
the number of visited points $N\_n$, has a behaviour as the random walk was on
$\Z^d$. More precisely, for all $0<\alpha<1$, we proved that there exist
constants $C\_i$ and $C\_s$ such that for all infinite cluster that contains
the origin, we have: $$ e^{-C\_i n^{\frac{d}{d+2}}} \leq \E\_0^{\omega}
(\alpha^{N\_n}) \leq e^{-C\_sn^{\frac{d}{d+2}}}.$$ Our approach is based on
finding an isoperimetric inequalities on the infinite cluster, lifted on a
wreath product which give good behaviour. The problem of the isoperimetry on
wreath product was already raised by A.Ershler.
