  Muon Telescope Detector (MTD) is a newly installed detector in the STAR
experiment. It provides an excellent opportunity to study heavy quarkonium
physics using the dimuon channel in heavy ion collisions. In this paper, we
report the muon identification performance for the MTD using proton-proton
collision at $\sqrt{s}$ = 500 GeV with various methods. The result using the
Likelihood Ratio method shows that the muon identification efficiency can reach
to $\sim$90% for muons with transverse momentum greater than 3 GeV/c and the
significance of J/$\psi$ signal is improved by $\sim$40% compared to using the
basic selection.
