Abstract: The limitation of historical data has always been a bottleneck to break through in philological research. The controversy over the falsehood and authenticity of Ama no Hara reflects the divergence between Eastern and Western scholars on the time and place of its creation. It also gives rise to contention between Chinese and Japanese scholars on the issue of marriage and family in the Tang Dynasty. The unanimous attention of the academic circles to Abenonakamaros poetry reflects the idea and methodology of “using poetry to prove history”. Furthermore, at the level of research on character behavior and activity, a trend of extension and refinement can also be seen. Regarding the study of the cases and group portraits of Kentoushi, there is still room from a historical perspective of ancient “East Asia” involving Bohai and Vitnan relationship, and from other angles and aspects of micro research.

Key words: Abenonakamaro, ambassador to Tang Dynasty, East Asia, using poetry to prove history