  We study the inflation dynamics of generalized dilaton-axion models with a
new Fayet-Iliopoulos (FI) term. In particular, we find the relationships
between the super-potential parameters and the coefficient of natural logarithm
of the real part of dilaton-axion fields stored in the K\"ahler potential based
on the vacuum conditions at the end of inflation. We also evaluate the feasible
initial field values, their corresponding SUSY breaking scales and the
iso-curvature parameters.
