  Via the Initial Single Pion Emission (ISPE) mechanism, we study the
$\phi(1020)\pi^{+}$ invariant mass spectrum distribution of $Y(2175) \to
\phi(1020)\pi^{+} \pi^{-}$. Our calculation indicates there exist a sharp peak
structure ($Z_{s1}^+$) close to the $K\bar{K}^\ast$ threshold and a broad
structure ($Z_{s2}^+$) near the $K^\ast\bar{K}^\ast$ threshold. In addition, we
also investigate the $\phi(1680) \to \phi(1020)\pi^{+} \pi^{-}$ process due to
the ISPE mechanism, where a sharp peak around the $K\bar{K}^\ast$ threshold
appears in the $\phi(1020)\pi^{+}$ invariant mass spectrum distribution. We
suggest to carry out the search for these charged strangeonium-like structures
in future experiment, especially Belle II, Super-B and BESIII.
