  This talk is a short overview of the physics potential of the LHC with
emphasis on Higgs search and SUSY search. First I review why LHC with the ATLAS
and CMS detectors is expected to give a decisive test of the electroweak
symmetry breaking mechanism of the Standard Model. Then I consider the Higgs
sector of the Standard Model (SM). Finally the search for supersymmetry is
discussed within the framework of various implementation of the Minimal
Supersymmetric Standard Model (MSSM).
