  We consider the Affleck-Dine baryogenesis comprehensively in the minimal
supersymmetric standard model with gauge-mediated supersymmetry breaking.
Considering the high temperature effects, we see that the Affleck-Dine field is
naturally deformed into the form of the Q ball. In the natural scenario where
the initial amplitude of the field and the A-terms are both determined by the
nonrenormalizable superpotential, we obtain a narrow allowed region in the
parameter space in order to explain the baryon number and the dark matter of
the universe simultaneously. Therefore, the Affleck-Dine baryogenesis is
successful, although difficult.
