  We study the end-point of the Electroweak phase transition using the
auxiliary mass method. The end point is $m_H\sim40$ (GeV) in the case $m_t=0$
(GeV) and strongly depends on the top quark mass. A first order phase
transition disappears at $m_t\sim 160$ (GeV). The renormalization effect of the
top quark is significant.
