  We report the preliminary results of the studies of hadron spectrum under the
background of abelian and monopole gauge fields in quenched Wilson SU(3) QCD.
Abelian gauge fields alone reproduce the same chiral limit as in the full case.
Critical hopping parameter $\kappa_c$ and $m_{\rho}$ are the same in both
cases. We need more time to get a definite result in the case of monopole
background. The photon contribution do not produce any mass gap in the chiral
limit ($\kappa=\kappa_c\sim 0.17$). The behavior is similar to those in the
free photon case for $\kappa_c= 0.125$.
