  We study the collider phenomenology of the electroweak phase transition and
electroweak baryogenesis in the framework of the effective field theory. Our
study shows that the effective theory using the dimension-6 operators can
enforce strong first order phase transition and provide sizable CP violation to
realize a successful electroweak baryogenesis. Such dimension-6 operators can
induce interesting Higgs phenomenology that can be verified at colliders such
as the LHC and the planning CEPC. We then demonstrate that this effective
theory can originate from vector-like quarks and the triplet Higgs.
