In this paper, I dealt with the Korean emigration to South Sea Islands, going through the change in Korean population from 1914 to 1938 there. By analyzing that, I concluded as below; Korean emigration to South Sea Islands began with hundreds of laborers sent to a farm owned by Japanese in Saipan and Kosrae in the late 1910s. At the early stage of emigration, the emigrants were under the harsh condition and they sometimes went on strikes demanding that the farm owners should reform their labor condition because they broke the contracts with laborers. In most cases, those strikes ended in repatriating he Koreans to the homeland. In the process, it seems that Japanese in South Sea Islands thought that Koreans were not suitable as laborers and this kind of negative concept influenced the Korea emigration. As a result, in the middle 1920s Korean population decreased compared to in the late 1910s. Korean emigration in the 1920s and 1930s was in small scale. Only 704 Koreans resided in South Sea Islands, which meant 1% of the whole population. And their concentration on the living areas was apparent. In the early 1920', most Koreans lived in Saipan and in the 1930s, about 70% of Koreans lived in Saipan. It was because the sugar related industry prospered there while there was almost no factories in other regions. About gender ratio, male population always outnumbered but female population had more ratio in the 1930s than in the 1920s, which means that emigration by families increased. In the case study of emigration to Saipan in 1938, I clarified that there were many problems in the process of emigrating and settling. According to newspaper articles, dispute for compensation occurred because of breaking contracts before emigrating and those who had already emigrated asked their relatives for money. The overall emigration from 1914 to 1938 was sluggish. This fact resulted from the passive introduction of Koreans by the colonial authorities because of their experience in the late 1910s. As Koreans already kept on emigrate to Manchuria and Japan, the Japanese authorities did not have to plan another emigration route and Koreans also had very little knowledge about South Sea Islands as their destination for emigration.