  In the framework of the Left-Right twin Higgs (LRTH) model, we consider the
constrains from the latest search for high-mass dilepton resonances at the LHC
and find that the heavy neutral boson $Z_H$ is excluded with mass below 2.76
TeV. Under these constrains, we study the Higgs-Gauge coupling production
processes $e^{+}e^{-}\rightarrow ZH$, $e^{+}e^{-}\rightarrow
\nu_{e}\bar{\nu_{e}}H$ and $e^{+}e^{-}\rightarrow e^{+}e^{-}H$, top quark
Yukawa coupling production process $e^{+}e^{-}\rightarrow t\bar{t}H$, Higgs
self-couplings production processes $e^{+}e^{-}\rightarrow ZHH$ and
$e^{+}e^{-}\rightarrow \nu_{e}\bar{\nu_{e}}HH$ at $e^{+}e^{-}$ colliders.
Besides, we study the major decay modes of the Higgs boson, namely
$h\rightarrow f\bar{f}$($f=b,c,\tau$), $VV^{*}(V=W, Z)$, $gg$, $\gamma\gamma$.
We find that the LRTH effects are sizable so that the Higgs boson processes at
$e^{+}e^{-}$ collider can be a sensitive probe for the LRTH model.
