  The electroweak baryogenesis depends on the profile of the CP-violating
bubble wall created at the first order phase transition. We attempt to
determine it by solving the coupled equations of motion for the moduli and
phases of the two Higgs doublets at the transition temperature. A variety of
CP-violating bubble walls are classified by boundary conditions. We point out
that a sufficiently small explicit CP violation gives nonperturbative effects
to yield the baryon asymmetry of the universe.
