  In Next Linear Colliders at TeV scale, electroweak double logarithmic
corrections, which come from the infrared behaviors of theory can not be
neglected. It is well known that in QED and QCD, double logarithmic corrections
are resummed to all orders, and these corrections can be exponentiated,
resulting in the Sudakov form factor. However it is never trivial that double
logarithmic corrections in electroweak theory can be exponentiated, because of
the spontaneous breaking of symmetry and the pattern of that. We discuss the
electroweak double logarithmic corrections at two loop level and explain the
differences of ``Soft'' structure between the electroweak theory and QCD (the
unbroken non-abelian gauge theory).
