  I review the recent progress on the perturbative QCD approach to exclusive
$B$ meson decays, discussing the comparison of collinear and $k_T$
factorizations, the CP asymmetry in the $B^0\to\pi^+\pi^-$ decay, penguin
enhancement, the branching ratio of the $B^0\to D^0\pi^0$ decay, and three-body
nonleptonic decays.
