  In this study, Higgs and Z boson associated production with subsequent decay
is attempted in the framework of alternative left-right model, which is
motivated by superstring-inspired $E_6$ model at CEPC and future linear
colliders. We systematically analyze each decay channel of Higgs with
theoretical constraints and latest experimental methods. Due to the mixing of
scalars in the Higgs sector, charged Higgs bosons can play an essential role in
the phenomenological analysis of this process. Even though the predictions of
this model for the signal strengths of this process are close to the standard
model expectations, it can be distinct under high luminosity.
