  We investigate the predictions on the mass spectrum and Higgs boson decays in
the supersymmetric standard model extended by U(1)_B-L symmetry (BLSSM). The
model requires two singlet Higgs fields, which are responsible for the
radiative breaking of U(1)_B-L symmetry. It predicts degenerate right-handed
neutrino masses (1.7-2.2 TeV) as well as the right-handed sneutrinos of mass <~
4 TeV. The presence of right-handed neutrinos and sneutrinos trigger the baryon
and lepton number violation processes, until they decouple from the Standard
model particles. Besides, the model predicts rather heavy colored particles;
stop and sbottom massesare >~ 1.5 TeV, while stau mass >~ 100 GeV and chargino
mass >~ 600 GeV. Even though, the implications are similar to minimal
supersymmetric standard model, BLSSM can predict another Higgs boson lighter
than 150 GeV. We find that the second Higgs boson can be degenerate with the
lightest CP-even Higgs boson of mass about 125 GeV and contribute to the Higgs
decay into two photons. In addition, it can provide an explanation for the
excess in h -> 4l at the mass scale ~ 145 GeV.
