Abstract: Diaspora tourism is often considered a form of ‘homecoming’, and with the development of transportation and communication technology, tourism activities become more and more convenient and international, the tourism experience of these diaspora communities who are forced to leave their hometown and scattered in other countries is more complex and diverse. This trend makes diaspora studies developing rapidly in the field of geography and tourism. The tourism behavior of diaspora communities has become a new focus in academic research, and has also been attached importance to tourism market.Based on the related literature and empirical research in recent 20 years, starting from the development of diaspora studies paradigm, sorting out the research progress summarizing its research perspective: place attachment is an internal psychological drive, and transnationalism is an external geographical feature. According to other scholars’ achievements, the diaspora tourism is defined and classified from the perspective of the spatial nature and participants of the diaspora tourism activities. The spatial and temporal characteristics of the diaspora tourism, the tourism experience of the diaspora communities and the impact of this subdivision market on the motherland tourism market are analyzed in detail.Finally, the concept of diaspora tourism is introduced to China, with pointing out the shortcomings of tourism research on Chinese diaspora and setting up a research framework that is in line with China's actual situation, and clarifying the importance and emphasis of developing Chinese diaspora tourism research in China.