China and South Korea are the biggest trade partners of North Korea. But the economic cooperation reflect different characteristics between China-North Korea and North-South Korean.A long time, as a result of steady development of China-North Korean political relation, the economic cooperation between China and North Korean keeps steady growing, as well as bring about positive political and economic interest. North Korea and South Korea are devoid of mutual trust because of the long-term divide. The North Korea policy of South Korea is a lack of continuity, the relationship of two countries is instability, and the motive about the economic cooperation is different. Therefore, the economic cooperation between North and South Korea will give both sides positive impact on politics and economy if the bilateral relation isameliorated, Oppositely it will become the means of exerting pressure on each other and face the threat and challenge.