  One kind of particularly interesting pseudoscalar particles, called
axion-like particles (ALPs), have rich physical phenomenology at high- and
low-energy collider experiments. After discussing most of single production
channels of ALP at electron-positron colliders, we investigate the possibility
of detecting this kind of new particles through the W$^{+}$W$^{-}$ fusion
process e$^{+}$e$^{-}$ $\rightarrow$ $\overline{\nu}_{e}$$\nu_{e}a$
$(\rightarrow \gamma \gamma)$ at the CLIC. The 3$\sigma$ and 5$\sigma$ bounds
on the ALP parameter space at the three energy stages of the CLIC are obtained.
We find that the bounds given by the CLIC are complementary to the existing
experiments exclusion regions.
