古代宗法时期《诗纬》因与经义相悖谬而被排斥,近代以来则因其语涉荒诞多说祥瑞迷信而予否定,此皆无助于认识其本来真实面貌。徐公持该文分别论述了《诗纬》在内容及形式上的基本特点,及其在经学、文献学、文学上的意义。说经是《诗纬》的主要义指,《诗纬》赋予诗以神格地位,以“诗者持也”来说诗之功能,说篇义、说章句的部分,也多以天人之学内容为特色, In the ancient patriarchal period, “Wei Wei” was rejected because of its incomparableness with the righteousness. Since the modern times, it has been denied because of its absurdity and absurdity. This does not help to know its original appearance. This article discusses respectively the basic characteristics of “Shi Wei” in content and form and its significance in classics, philology and literature. Shuo Jing is the main meaning of “Wei Wei”, “Shi Wei” gives the poem the status of the godhead, and “the poet’s holding also” Humanity content features,