Abstract
The research of Sogdian in Japan started at the beginning of the 20th century and had a history of more than 100 years.In the early 20th century,Japanese scholars mainly relied on traditional historical materials to research the development of Sogdian people in the East.In the 1960s and 1990s,they used the unearthed documents from Dunhuang and some Turkic inscriptions in their studies,and their research perspectives also began to focus on Sogdian subjects.Since the 1990s,the integration of Dunhuang and Turpan documents with unearthed epitaph and stone carvings had led to the full development of Sogdian research in the three-dimensional direction.Through comparing the research of Sogdian between China and Japan,we can see that although the Sogdian study in Japan was earlier than that in China,the peak of Sogdian research in Japan basically coincides with that of Chinese scholars.It is worth noting that there are some disputable tendencies in the study of Sogdian in Japan,such as the generalized over-judgement on race rather than culture of Sogdian people.