  The $B_{c}^{\ast}$ ${\to}$ $B_{u,d,s}V$, $B_{u,d,s}P$ decays are investigated
with the QCD factorization approach, where $V$ and $P$ denote the ground
$SU(3)$ vector and pseudoscalar mesons, respectively. The $B_{c}^{\ast}$
${\to}$ $B_{u,d,s}$ transition form factors are calculated with the
Wirbel-Stech-Bauer model. It is found that branching ratios for the
color-favored and Cabibbo-favored $B_{c}^{\ast}$ ${\to}$ $B_{s}{\rho}$,
$B_{s}{\pi}$ decays can reach up to ${\cal O}(10^{-7})$, which might be
measurable in the future LHC experiments.
