  Motivated by the potential prospects of the $B_{c}^{\ast}$ meson samples at
hadron colliders, the bottom-changing $B_{c}^{\ast}$ ${\to}$ ${\psi}(1S,2S)P$,
${\eta}_{c}(1S,2S)P$ weak decays are first studied with the perturbative QCD
approach, where $P$ $=$ ${\pi}$ and $K$. It is found that branching ratio of
the CKM-favored $B_{c}^{\ast}$ ${\to}$ $J/{\psi}{\pi}$ decay is about ${\sim}$
${\cal O}(10^{-8})$, which might be measurable at the future LHC experiments.
