The unified Korean Peninsula will enjoy big domestic market with the population of nearly 70 million people. But the problem is, aside from different economic system between north and south, the huge gap in the level of socio-economic development stage. south Korean government has paid keen attention to the pollution problem from early 1980s. ut in case of North Korea, due to the consecutive failures in economic policy. was unable to enact similar steps. Suppose the Korean peninsula were unified and realized whole single market, the environment policy will confront really nightmare confusion. Considering the comparatively low level of wage in north Korea, the pollution related industries will move to that area. however, the anticipated Green Round will move to that area. however, the anticipated Green Round will provide a tremendous obstacles to those products. It is quite clear that the politically unified Korean government can hardly find any excuse to such restrictions by the foreign countries. If the two Koreas can produce any agreement to maintain political division and deep close-economic cooperation it seems to be able to avoid that kind of problems. But this, dividing politically and acting as single market, is too unrealistic imagination. My personal and preliminary conclusion is ; First, to enhance the economic cooperation between the North and the South to lessen the gaps. Second, to encourage the Pyongyang government to practice anti-pollution policy from the point of industrialization. Third, to persuade foreign government to accept double standards when importing North Korean products.