Abstract: Against the context of high-speed economic growth in China, the number of immigrants who have expatriated to China soared over the last two decades and continued to increase. The growth of transmigrants’ population in China has led to the study of transmigrants’ social integration, which is becoming increasingly important. As such, the study sheds light on the Japanese Transmigrants (JTs) in Shanghai, taken as a case study to examine the social integration and satisfaction through three factors: employment, housing, and consumer behaviors. The consumer behaviors include shopping, catering, medical, education, recreation, and transportation. Based on first-hand data gathered from onsite surveys and interviews conducted in 2012 and 2013, we found that the social integration of JTs in Shanghai is general at a low-level and their segregation is due to the following reasons. Firstly, the JTs mainly worked in Japanese companies or Japanese ethnic businesses, in other word, they only sought for jobs in the labor market specifically for foreigners, rather than in the normal labor market. Secondly, the JTs preferred to live near their compatriots, which lead to the formation of the Japanese enclaves in Gubei area and Pudong area. Thirdly, the JTs’ daily lives depended largely on the Japanese ethnic economy. The current condition and problems of JTs’ social integration creates challenges for immigrant management and social integration, as well as for international city development in China.