  We present the efficient technique to extract the signal of the intermediate
mass Higgs boson from the backgrounds at future $\gamma \gamma$ colliders. For
a clear Higgs detection, it is important to fit the original electron
accelerator energy depending on the Higgs mass, to set the polarization of the
photon beams and to apply the efficient $b$ quark tagging method. We
demonstrate the extraction of information of Higgs parameters and the new
physics from the observable physical quantities. It is clearly shown that a
future $\gamma \gamma$ collider will have a rich potential for study on the new
physics, as well as the Higgs physics.
