先秦《乐经》自汉初散亡①后,历代补拟《乐经》之作不绝如缕②,西汉平帝元始年间王莽所立《乐经》(以下简称“元始《乐经》”)即是其中之一。然而,关于元始《乐经》究系何人所撰之何书,向有疑义,是古代经学史和文献学史上聚讼纷纭的一大公案。清代以来,学者重辑元始《乐经》,其间产生了不少误辑和附会之文。这些文字歪曲了元始《乐经》的本来面目,也难免对今天的研究产生误导。此外,关于元始《乐经》的成书、著录等问题,也少见有人提及。本文尝试厘清以上所云诸问题,不 Pre-Qin “Music by” since the early Han Dynasty ①, the dynasties make up the “Book of Music” for many years without exception ②, the Western Han Dynasty Emperor Pingyuan Wang established “Music by” (hereinafter referred to as “) Is one of them. However, it is doubtful that any book about the origin of ”The Book of Songs“ written by Yuan Shi is a major case of controversy in the history of ancient classics and history of literature. Since the Qing dynasty, scholars have been rekindling the ”Book of Music“ for a long time, during which a lot of mistakes and attachments have been produced. These texts distort the true nature of Yuan Dynasty’s ”Book of Music“ and will inevitably mislead the study of today. In addition, the Yuan Dynasty ”Book of Music" into a book, bibliography and other issues, it is rare that someone mentioned. This article attempts to clarify the above problems, no