  A discrete subset $S$ of a topological gyrogroup $G$ with the identity $0$ is
said to be a {\it suitable set} for $G$ if it generates a dense subgyrogroup of
$G$ and $S\cup \{0\}$ is closed in $G$. In this paper, it was proved that each
countable Hausdorff topological gyrogroup has a suitable set; moreover, it is
shown that each separable metrizable strongly topological gyrogroup has a
suitable set.
