Leading Electroweak Corrections to the Neutral Higgs Boson Production at the Fermilab Tevatron**The project supported in part by National Natural Science Foundation of China, Doctoral Program Foundation of Higher Education, the Post Doctoral Foundation of China, and a grant from the State Commission of Science and Technology of China. ZHU ShouHua gratefully acknowledges the support of K.C. WONG Education Foundation,

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We calculate the leading electroweak corrections to the light neutral Higgs boson production via at the Fermilab Tevatron in both the standard model and the minimal supersymmetric model, which arise from the top-quark and Higgs boson loop diagrams. We found that the leading electroweak corrections can exceed the QCD corrections for favorable values of the parameters in the MSSM, but such corrections are only about in the SM, which are much smaller than the QCD corrections. For the mass region of , the leading electroweak corrections can reach for large tan , and these corrections may be observable at a high luminosity Tevatron; at the least, new constraints on the tan can be established.