  Masses and signals of the production of Doubly charged Higgses(DCH) in the
framework of the supersymmetric reduced minimal 3-3-1 model(SUSYRM331) are
investigated. In the DCH sector, weprove that there always exists a region of
the parameter space where the mass of the lightest DCH is in order of
$\mathcal{O}(100)$ GeV even when all other new particles are very heavy.The
lightest DCH mainly decays to two same-sign leptons while the dominated decay
channels of the heavy DCHs are those decay to heavy particles. We analyze each
production cross section for $e^+e^- \rightarrow H^{++} H^{--}$ as a function
of a few kinematic variables, which are useful to discuss the creation of the
DCHs in the $e^+e^-$ colliders as a signal of new physics beyond the Standard
Model. The numerical study shows that the cross sections for creating the
lightest DCH can reach values of few pbs. The two other DCHs are too heavy,
beyond the observable range of experiments. The lightest DCH may be detected by
the International Linear Collider (ILC) or the Compact LInear Collider (CLIC)
by searching its decay to a same-sign charged lepton pair.
