During a long time before the 1990s，no Chinatown could be found in South Korea（ROK）.However，after China and ROK established diplomatic relations in 1992，due to the rapid development of economic and trade relations with China，decreasing birth rate and acceleration of population aging in ROK，and reforms in its immigration policy，ROK has become one of the five main receiving countries for Chinese migrants，particularly for Korean-Chinese.Compared with the past time before 1992，the current situation of overseas Chinese in ROK has undergone dramatic changes，both in population size and in the diversity of their residency status as well as their personal attributes.These changes not only have increased the overall influence of overseas Chinese in ROK，but also have contributed to the mutual understanding between the nationals of China and ROK and the cooperation in various fields between the two countries.