This paper aims to discuss how to research and describe the globalizing society by urban sociology and ethnic studies. There are three multiple levels of analyzing global phenomena as local, national and global perspective. I ague that these three levels are related to each other. When we started to research newcomers in Ikebukuro area in 1988, we adopted community study approach. However recently they continue to stay in Japan and have founded their own migration systems in each group. As a result, there are new ethnic communities in Japan which changed the structure of urban local communities. They also established many associations and ethnic businesses by using their transnational social spaces between sending and receiving areas.
As S. Castles pointed out, in the 21st century, international migration study would become the main theme of sociological studies. A research is necessary to transcend the flame of nation state because none of social phenomena these days are not influenced by globalization.
I will explain the new perspective of transnational social space between China and Japan. We will have to research both the sending and receiving societies from the perspective of not only local and national level but also transnational level. Since 20% of Chinese residents in Japan have permanent residential status and every year about 5000 people obtain Japanese nationality, they are able to develop their businesses and opportunities built in both societies. There are new social spaces forming by Chinese transmigrants in urban and rural areas of China and Japan.
In conclusion, I suggest that we will be able to broaden the research field of urban sociology through ethnic and international migration studies such as the legacies of Chicago school to focusing these problems. In urban sociological studies, we will have to create a new perspective of globalizing urban society.
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