  We obtain the one- and two-loop renormalization group equations for soft SUSY
breaking scalar interactions in general, semi-simple SUSY gauge model, by using
the supergraph method. We find that the method simplifies the calculation
significantly because of the non-renormalization theorem and also because of
the property that the relevant divergences are derived by simple algebra from
those in exact SUSY case. A disagreement with the existing result is found in
$\beta^{(2)}(m^2)$ and its cause is briefly discussed.
