We study various constraints in the non decoupling MSSM scenario. The light Higgs boson may evade the direct search experiments at LEPII or Tevatron while the 125 GeV Higgs like boson is identified as the heavy Higgs boson in the spectrum. With combined flavor constraints B-> X_s ＼gamma and B_s -> ＼mu^+ ＼mu^- and direct constraints on Higgs properties, we find best fit scenarios with light stop of 500 GeV, negative A_t around 750 GeV and large ＼mu-term of 2-3 TeV. However, large parameter region in the survival space under all bounds may be further constrained by H->＼tau＼tau if no excess of ＼tau＼tau is confirmed at LHC. We only identify a small parameter region with significant H-> h h decay that is consistent with all bounds and reduced ＼tau＼tau decay branching fraction. In addition, if current dark matter mostly consists of neutralino, direct detection experiments like XENON100 also puts stringent bound over this scenario.