The rapid growth of Korean SI(System Integration) Industries have established the largest marketplace in Korean software markets. It is the high value added industry, which is knowledge-centered and technology-intensive. Korean SI industries are going on participating the global market as well as the foreign high technical services are introduced to Korea by WTO's contracts. In this thesis, we analysis Korean SI industries present state and characteristics, futhermore suggest the plan to expand the SI industries of Korea in the global competitive market.