藤原贞敏是中日音乐交流史上疑点较多的一位历史人物，围绕着他有一些相互矛盾的传说难辩真伪。本文根据对日本现存多种历史资料，特别是近年整理出版的与藤原贞敏同时入唐的学问僧圆仁（慈觉大师）在唐１０年期间所写的旅行日记《入唐求法巡礼行记》的考察，肯定藤原贞敏本人在《琵琶诸调子品》“跋文”中所记的真实性，澄清了《日本三代实录》等书的不实之词以及由此造成的一些混乱 Fujiwara Zhenmin is a historical figure with more doubtful points in the history of Sino-Japanese music exchange. Around him there are some contradictory legends that dwell on authenticity. This article based on a variety of historical data available in Japan, especially in recent years, with the Fujiwara Zhenmin at the same time into the knowledge of the Tang Monk Yuanren (Cherish Master) wrote in the Tang 10 years travel diary Investigating and affirming the authenticity recorded by Fujiwara Zhenmin himself in The Postscript of Pipa Tone, Clarifying the untrue words of the book “Three Generations in Japan” and the resulting confusion