  We study phenomenological aspects of the MSSM with extra U(1) gauge symmetry.
We find that the lightest Higgs boson mass can be increased up to 125 GeV,
without introducing a large SUSY scale or large A-terms, in the frameworks of
the CMSSM and gauge mediated SUSY breaking (GMSB) models. This scenario can
simultaneously explain the discrepancy of the muon anomalous magnetic moment
(muon g-2) at the 1 sigma level, in both of the frameworks, U(1)-extended
CMSSM/GMSB models. In the CMSSM case, the dark matter abundance can also be
explained.
