After World War Ⅱ，Chinese migration to Japan experienced a long period of stagnation phase.But after the 1980s，China became Japan’s the largest source of foreign students，foreign skilled and unskilled labors，and foreign spouses of Japanese.Meanwhile，Japan has become one of the five main receiving countries of Chinese migrants.Compared with the past time before the 1980s，the current situation of overseas Chinese in Japan has undergone tremendous 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 social status and influence of overseas Chinese in Japan，but also have contributed to the mutual understanding between the nationals of China and Japan and the cooperation between the two countries，in a lot of fields，including higher education，science and technology，investment and trade，sports and cultural exchanges，etc.