  We consider the CMB constraints on reheating and dark matter parameter space
for a specific plateau type inflationary model. The plateau inflationary models
which are currently most favored models from data can be well approximated by a
potential of the form $V(\phi)\propto \phi^n$ around $\phi=0$. This fact makes
it possible to study the reheating phase with general inflaton equation of
state in a viable cosmological scenario. In addition, following our recent
work[1], we generalize the connection between reheating and the present CMB
data and the dark matter parameter space for general inflaton equation of state
parameter.
