Abstract : The extraction of the fundamental parameters of supersymmetry and the Higgs sector will be a difficult task at the LHC and ILC. In this report, we will study the use the Higgs sector measurements alone at the LHC to differentiate between the Standard Model and a supersymmetric parameter set as a pessimistic scenario. Then, in an optimistic scenario, we will study the extrapolation to the high scale using many supersymmetric measurements at the LHC and ILC.