On November 10，2014，China-South Korea FTA declared to finish substantive negotiation. For over 10 years，China-Korea FTA has made many breakthroughs and is expected to be fully implemented in the near future. The coverage of China-South Korea free trade agreement is the widest and its value is also the biggest among all the bilateral agreements. Except for the direct effect on the countries involved，China-South Korea free trade agreement also has a significant influence on international region. It can be called a milestone in the history of Chinese economic cooperation. This thesis targets on the international region effect of China-South Korea FTA. First，the author sorts out the theory of FTA’s international region effect. Then according to the sequence of folk cooperative research，government-industry-university joint research and FTA negotiation，the author combs out the development process and characteristics of China-South Korea FTA. At last the author discusses the International Region Effect of China-South Korea FTA from the aspect of promoting the China-Japan FTA process，reversing Japan’s right deviation trend and improving the regional status of Southeast Asia and then makes a suggestive prospect for the future development trend.