"Ethnic Economy" has been a hot topic in the field of Southeast Asian Chinese Study. The changes in the "Chinese economy" are not simply caused by changes in cultural and ethnic identity, but involve historical backgrounds and social evolution that are much more complicated. However, theoretical analysis is still analysis is still needed. This paper aims to introduce a number of theoretical works, case studies and analytical concept of "Ethnic Economy" from economic sociological perspective, and moreover, providing new ideas and approaches for studies of Southeast Asian Chinese economy.