  We explore a dynamical mechanism to realize the emergence of a global
$U(1)_{\rm PQ}$ symmetry and its spontaneous breaking at an intermediate scale
for an axion solution to the strong CP problem. Such a dynamics is provided by
a new supersymmetric QCD near the middle of conformal window that couples to
fields spontaneously breaking the $U(1)_{\rm PQ}$ symmetry. A large anomalous
dimension of the $U(1)_{\rm PQ}$ breaking fields leads to the suppression of
explicit $U(1)_{\rm PQ}$-violating higher dimensional operators. The $U(1)_{\rm
PQ}$ breaking vacuum is generated at a scale hierarchically smaller than the
Planck scale by a non-perturbative effect. The $U(1)_{\rm PQ}$ breaking drives
the conformal breaking, and all the new quarks become massive. The axion
potential is generated by the ordinary color $SU(3)_C$ effect as the $U(1)_{\rm
PQ}$ symmetry is only anomalous under the $SU(3)_C$. The saxion direction is
stabilized by supersymmetry breaking and cosmologically harmless.
