  Littlest Higgs $(LH)$ model predicts the existence of the doubly charged
scalars $\Phi^{\pm\pm}$, which generally have large flavor changing couplings
to leptons. We calculate the contributions of $\Phi^{\pm\pm}$ to the lepton
flavor violating $(LFV)$ processes $l_{i}\to l_{j}\gamma$ and $l_{i}\to
l_{j}l_{k}l_{k}$, and compare our numerical results with the current
experimental upper limits on these processes. We find that some of these
processes can give severe constraints on the coupling constant $Y_{ij}$ and the
mass parameter $M_{\Phi}$. Taking into account the constraints on these free
parameters, we further discuss the possible lepton flavor violating signals of
$\Phi^{\pm\pm}$ at the high energy linear $e^{+}e^{-}$ collider $(ILC)$
experiments. Our numerical results show that the possible signals of
$\Phi^{\pm\pm}$ might be detected via the subprocesses $e^{\pm}e^{\pm}\to
l^{\pm}l^{\pm}$ in the future $ILC$ experiments.
