  We propose a new framework for the next-to-minimal supersymmetric standard
model (NMSSM) in gauge mediation, where in general the correct electroweak
symmetry breaking (EWSB) is difficult to be explained. The difficulty is caused
by the absence of a soft supersymmetry (SUSY) breaking mass for the NMSSM
singlet S. In our framework, S is a meson in a hidden QCD. This QCD is
responsible for the dynamical SUSY breaking, forming S, and the soft SUSY
breaking mass for S, which is a key to explain the correct EWSB: all the
ingredients for successful phenomenology originate from the common dynamics.
From the requirement of the successful EWSB, the low-scale SUSY breaking around
100-1000 TeV is predicted. This is favored to avoid the large fine-tuning.
