《难经》究竟著作于何时？作者是谁？众说纷纭，迄无定论。从《难经》本身的学术观点及其发展变化史迹考察，提出两点有力的内证，又从两汉时期的文献推敲，得到三个方面的佐证，从而认定《难经》是战国时期的作品，其作者是秦越人。这对评定《难经》在祖国医学发展过程中的地位和影响具有重要意义。 “Difficult Classic” when exactly what works? Who is the author? Different opinions, as inconclusive. From the academic viewpoints of “Difficult Sutra” and the historical changes of its development and change, it puts forward two powerful internal evidences, and from the document scrutiny in the Western Han Dynasty, it obtains the evidences from three aspects that the “Difficult Sutra” is the works in the Warring States period , Whose author is Qin Yue people. This is of great significance for assessing the status and influence of “Difficult Classic” in the development of medicine in the motherland.