  We present the calculations of the complete next-to-leading order (NLO)
inclusive total cross sections for the associated production processes $pp\to
\tilde{t}_i\tilde{\chi}_k^-+X$ in the Minimal Supersymmetric Standard Model at
the CERN Large Hadron Collider. Our calculations show that the total cross
sections for the $\tilde{t}_1\tilde{\chi}_1^-$ production for the lighter top
squark masses in the region 100 GeV $< m_{\tilde{t}_1}<$ 160 GeV can reach 1 pb
in the favorable parameter space allowed by the current precise experiments,
and in other cases the total cross sections generally vary from 10 fb to
several hundred fb except both $m_{\tilde{t}_1}>$ 500 GeV and the
$\tilde{t}_2\tilde{\chi}_2^-$ production channel. Moreover, we find that the
NLO QCD corrections in general enhance the leading order total cross sections
significantly, and vastly reduce the dependence of the total cross sections on
the renormalization/factorization scale, which leads to increased confidence in
predictions based on these results.
