  Phenomenological analysis to the R-parity violating supersymmetry with a
vector-like extra generation is performed in detail. It is found that, via the
trilinear couplings, the correct neutrino spectrum can be obtained. The Higgs
mass rises to 125 GeV by new up-type Yukawa couplings of vector-like quarks
with no need of very heavy superpartners. Phenomena of new heavy fermions at
LHC are predicted.
