  We give a simultaneous analysis of $g_\mu-2$ and lepton flavor violation
within MSSM. Working on the interaction basis, we give direct relations between
$\delta a_\mu$ and Br$(\tau\to\mu\gamma)$ induced by the supersymmetric
particles. We find the SUSY parameter space to satisfy the $g_\mu-2$ constraint
can be considerably different from that given in case of no lepton flavor
mixing in the soft SUSY breaking sector.
