  In the mean-field approximation we study the chiral soliton within the linear
sigma model in a thermal vacuum. The chiral soliton equations with different
boundary conditions are solved at finite temperatures and densities. The
solitons are discussed before and after the chiral restoration. We find that
the system has soliton solutions even after the chiral restoration and they are
very different from those before the chiral restoration, which indicates that
the quarks are still bounded after the chiral restoration.
