Korean government adopted nuclear energy as a key energy source to reconstruct the shattered Korean economy caused by the oil shock in the 1970s, by securing cheap and stable electricity supply. During the 1980s, nuclear energy Played a crucial role as a foundation stone in the rapid growth of Korean economy. In addition, since 1997 nuclear energy has discharged its duty as a leading energy source to overcome the IMF foreign currency crisis. Finally, in 1999 the Korean nuclear power plants achieved the highest performance results compared with others in the world. In this article, I am going to look through the current status of Korean nuclear power generantion with an index of its development and I would like to suggest necessary tasks to Korean nuclear power industries to become more competitive in the future.