A multiconfigurational self-consistent reaction field (MCSCRF) method is presented for solvation of a molecule on a metal surface. We assume that the molecular system is enclosed in a half-spherical cavity and adsorbed on the surface of a perfect conductor. The half-spherical cavity is embedded in a linear, homogeneous, isotropic dielectric medium. A multiconfigurational self-consistent reaction field linear response method is presented for calculating frequency dependent polarizabilities as well as electronic excitation energies and transition moments of a solvated molecule on a metal surface.