Our country have propelled economic cooperation with the North Korea meantime but there is in suspended state lowering by the latest Cheonan Warships(天安艦) case and Yeonpyung island artillery case. Our country will have to become south and north Korea through to become Northeast Asia in the inner parts country for long-term. North Korea and China have been human traces, physical alternating current through 18 beats meantime, but practical use of Domun(圖們)-Namyang(南平) entrance and exit place and Gaedunsan(開屯山)-Sambong(三峰) entrance and exit place located in place that is near geographically with Najin(羅津) hereafter is expected to increase. There is big change to so-called Northeast 3province(東北3城) that adjoin to the latest North Korea Yalu River(鴨綠江) and Tumen River(豆滿江). What is called, huge development project of Northeast Asia in the inner parts is attained by the Chinese government according to Northeast 3province development project, and is expressing interest in Russia and me sailing out area. What is called, China is damp JangGilDo Plan(长吉图計劃) as part of Northeast 3province promotion Plan, and when consider North Korea · China’s historic relation with Korea · China that enclose this area, contain politics economics meaning more than area development strategies in simple China. Because economics meaning of JangGilDo Development Project makes industrial city cluster, and does this by hinterland of growth embodying Jangchun(長春)-Gillim(吉林)-Yanji(延吉)-Yongjung(龍井)-Tumen(圖們) to front line of development, it is compensation which make Hunchun(琿春)-Najin(羅津) by window. Strategy that wish to one politically Tumen River Development Plan lead, and preempt ahead geopolitic gains than the Northeast Asia countries was contained, and draws the North Korea that have refused development through country development strategies propulsion of central government dimension and intention to embody North Korea area in Northeast 3province area economic bloc was contained. In addition, intention that wish to do to convert from America · Japan in the inner parts international politics composition to international politics composition of China in the inner parts in Northeast Asia was contained Because Dalian Port(大連港) that saying too much is not even though hang in Najin port(羅津港)'s practical use that JangGilDo Plan is located to North Korea's Najin Seonbong(先鋒) area to be propeled successfully but the even speak has China need Najin port(羅津港)'s employment that JangGilDo is away from area, and meet logistics saturation, and JangGilDo is contiguity area for transport route security to Eastern Sea and Logistics cost reduction. Moreover, as well as Najin port(羅津港) is a harbor that can advance by sea of Northeast 3province, development potential energy is big to ice-free port located in area that Trans Korean Railroad(TKR), Trans-Siberian Railroad(TSR),Trans-Mongolian Railroad(TMR) etc. meet. To solve Korea Peninsula problem since this change and connection through,our country keeps own place of our country for long-term about Chinese 'East-north promote plan(東北振興計劃)', 'JangGilDo Development Project(长吉图開發計劃)' that intend Northeast Asia economic bloc expulsion of China in the inner parts, and advance to China Logistics market stably need confrontation strategy establishment in reply in efficiency woe side of Korea Peninsula economic bloc expulsion and logistics of course.