The purpose of this study is to measure technical gap and technical efficiency for manufacturing sectors of Korean East-Southern area and Japanese Kyushu area. Annual technical efficiency and annual meta-technical efficiency in Korean East-Southern area for 1999-2005 report 0632 and 0.625 respectively, and technical gap is 0.988 close to 1. As those in Japanese Kyushu area are 0.588 and 0.374, respectively, technical gap is 0.636 deviated from efficiency level, 1. When Super Cross-Border Economy is constituted, manufacturing sectors in Korean East-Southern area internally have a relatively beneficial position over those in Japanese Kyushu area. Specializing industrial sectors of comparative advantages, enlarging industrial cluster, and exchanging information and technology cooperation, Korean East-Southern region and Japanese Kyushu region should gain advantage over other economic areas in East-North Asia.