  In recent analyses the existence of
$SU(2)_L\times\SU(2)_R\times\SU(4)_C(g_{2L}\ne g_{2R})$ intermediate gauge
symmetry has been ruled out in SUSY SO(10) model at one-loop level, although
the left-right symmetric intermediate gauge group has been shown to exist with
certain light scalar superfields near 1 TeV.We show,how the asymmetric gauge
group is allowed with an intermediate scale $M_I=10^10- 10^13$ GeV by including
two-loop and threshold effects.
