  The current knowledge on the $D_{s}^{\ast}$ meson are very limited. Besides
the dominant electromagnetic decays, the $D_{s}^{\ast}$ weak decays are legal
and offer the valuable opportunities to explore the wanted $D_{s}^{\ast}$
meson. In this paper, the $D_{s}^{\ast}$ ${\to}$ ${\phi}{\pi}$ decay was
studied with the factorization approach. It is found that the branching ratio
${\cal B}(D_{s}^{\ast}{\to}{\phi}{\pi})$ ${\sim}$ ${\cal O}(10^{-7})$, which
corresponds to several thousands of events at the $e^{+}e^{-}$ collider
experiments including STCF, SuperKEKB, CEPC and FCC-ee, and several millions of
events at the hadron collider experiments, such as LHCb@HL-LHC. It is feasible
to experimentally study the $D_{s}^{\ast}$ ${\to}$ ${\phi}{\pi}$ weak decay in
the future, even considering the identification efficiency.
