  Mirror Twin Higgs(MTH) models always contain heavy gauge bosons and extra
Higgses. Besides, to accommodate tiny neutrino masses via seesaw mechanism, new
heavy neutrinos can also be introduced in MTH extension models. Such new
particles and interactions may lead to new contributions to the lepton flavor
violating (LFV) processes, including $\ell_i \to \ell_j\gamma$ and $\ell_i \to
\ell_j\ell_k\ell_l$. We find that current experimental data can stringently
constrain the parameter spaces and certain LFV processes can possibly be tested
by the next generation colliders. One-loop contributions of the new particles
to the muon anomalous magnetic momentumare also calculated. Such contributions
can still not solve the discrepancy between the experiments and the prediction
of the standard model.
