Authorities of the major industrialized countries infer that technological advances have a greater contribution to economic growth compared to traditional factors of production such as labor and capital and are actively pursuing investment in research and development. We have examined quantitatively the effect of R & D investment on exports in the IT sector in this study. Based on that results, how much of R & D investment in the IT sector should be made in order to reach trade surplus of two trillion dollars, which Korea government has aimed in 2020, is also to be analyzed.