  We study the exclusive decays of $B\to K^{*}\ell^+ \ell^-$ within the
framework of the perturbative QCD (PQCD). We obtain the form factors for the
$B\to K^{*}$ transition in the large recoil region, where the PQCD for heavy
$B$ meson decays is reliable. We find that our results for the form factors at
$q^2=0$ are consistent with those from most of the other QCD models in the
literature. Via the decay chain of $B\to K^* (K\pi) \ell^+ \ell^-$, we obtain
many physical observables related to the different helicity combinations of
$B\to K^* \ell^+ \ell^-$. In particular, we point out that the T violating
effect suppressed in the standard model can be up to $O(10%)$ in some CP
violating models with new physics.
