《中国医学源流论》是一部学界公认的医史经典之作，过去人们都认为该书作者是现代著名中医学者谢观。近年公布出版了一批史学大师吕思勉的著作及相关新史料，其中有一部题名《医籍知津》的书稿，从总体结构与文字内容来看，均与前者大同小异。本文通过缜密比勘和考辨，发现《源流论》实际是谢氏据《知津》增订而成。基于尊重历史事实的原则，有必要将《源流论》的作者署名修正为："吕思勉撰，谢观增订"。

The Theory of Chinese Medicine is a well-known classic work of medical history, which has been considered to be the work of XIE Guan, a famous Chinese medicine scholar in modern times. In recent years, a series of books of great historian LÜ Si-mian and related new historical materials have been published, including a work entitled Introduction to Chinese Medical Classics. It is similar to The Theory of Chinese Medicine in terms of the overall structure and contents of the text. Through careful study and examination, we can find that The Theory of Chinese Medicine is a supplement to Introduction to Chinese Medical Classics. According to the principle of respecting historical facts, it is necessary to claim that The Theory of Chinese Medicine was written by LÜ Si-mian and revised and enlarged by XIE Guan.