SUMMARY
We calculate full O(a)\mathcal{O}(\alpha) electroweak radiative corrections and O(a3)\mathcal{O}(\alpha^3) initial state radiation (ISR) corrections to e-e+?W-W+e^-e^+ \rightarrow W^-W^+ with initial beam polarization effects. In phenomenological results, we study the impact of electroweak and ISR corrections on cross-sections as well as their relevant distributions. We find that the corrections are order of 10% contributions. They are sizable contributions and should be taken into account at future lepton colliders.