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We study the full contributions at the leading order(LO) and QCDnext-to-leading order(NLO) to the cross section of the \eewwbb process in thestandard model(SM) at the ILC. In dealing the resonance problem we adopted thecomplex mass scheme in both tree-level and one-loop level perturbativecalculations. Our numerical results show that the K-factor varies from 1.501 to0.847 when $\sqrt{s}$ goes up from $360 GeV$ to $1.5 TeV$. We investigate thedependence of the LO and QCD NLO corrected cross sections of process \eewwbb oncolliding energy $\sqrt{s}$ and Higgs-boson mass. We also present the resultsof the LO and QCD NLO corrected distributions of the transverse momenta offinal particles, and the invariant masses of $Wb$-, $b\bar b$- and $WW$-pair.

One-loop QCD corrections to the $e^+e^- \to W^+ W^- b\bar b$ process at the ILC