  $\gamma\gamma\to \Pi_t^0$ is the major production mechanism of neutral
top-pion at the linear colliders. In this paper, we calculate the cross section
of the process $\gamma\gamma \to \Pi^0_t$ and discuss the potential to observe
the neutral top-pion via its various decay modes at the planned ILC. The study
show that, among the various neutral top-pion production processes at the
linear colliders, the cross section of $\gamma\gamma\to \Pi_t^0$ is the largest
one which can reach the level of $10^1-10^2$ fb. Due to the existence of the
tree-level flavor-changing coupling $\Pi_t^0 t\bar{c}$, $\gamma\gamma\to
\Pi_t^0 \to t\bar{c}$ can provide enough number of typical signals to identify
the neutral top-pion with the clean SM background. Therefore, the process
$\gamma\gamma\to \Pi_t^0$ play an important role in searching for the neutral
top-pion and test the TC2 model.
