  We calculate the complete next-to-leading order (NLO) QCD corrections to the
$T$-odd mirror quark pair ($q_-\bar q_-=u_-\bar u_-$, $c_-\bar c_-$, $d_-\bar
d_-$, $s_-\bar s_-$) production in the littlest Higgs model with $T$-parity
(LHT) at a high energy $\gamma \gamma$ collider. We present the dependence of
the leading order (LO) and NLO QCD corrected cross sections on the colliding
energy $\sqrt{s}$. Our calculation includes the subsequent full weak decays of
the final $T$-odd mirror quarks by adopting the narrow width approximation and
the exclusive 2-jet event selection criterion. We provide the LO and QCD NLO
kinematic distributions of final particles. We find that the NLO QCD correction
is phase space dependent and modifies the LO cross section evidently. The
$K$-factor increases noticeably when $\sqrt{s}$ approaches the threshold of the
on-shell $q_-$-pair production. We conclude that it is possible to separate the
signature of the $T$-odd quark pair production from possible Standard Model
background by taking proper kinematic cut.
