  We study the relation between QCD-monopole condensation and dynamical
chiral-symmetry breaking in the dual Ginzburg-Landau Theory, which realizes the
color confinement due to the dual Meissner effect. Solving the Schwinger-Dyson
equation at finite temperature numerically, we find the chiral symmetry is
restored at high temperature. The critical temperature of the chiral symmetry
restoration is strongly correlated with the string tension.
