  We discuss how the ordinary renormalization group (RG) equations arise in the
context of Wilson's exact renormalization group (ERG) as formulated by
Polchinski. We consider the phi4 theory in four dimensional euclidean space as
an example, and introduce a particular scheme of parameterizing the solutions
of the ERG equations. By analyzing the scalar composite operators of dimension
two and four, we show that the parameters obey mass independent RG equations.
We conjecture the equivalence of our parameterization scheme with the MS scheme
for dimensional regularization.
