《礼纬》、《乐纬》是纬书中的两种。由于古代乐学是从属于礼学的,因此,《礼纬》、《乐纬》可以放在一起研究。通过对西汉礼学的考察,可以知道《礼纬》、《乐纬》的形成与二戴礼学关系密切。在思想内容上,《礼纬》、《乐纬》主要记载了很多古代的礼乐制度和作用。《礼纬》、《乐纬》认为,礼乐在古代之所以重要并非因为它们的形式而在于它们观得失之效、反人道之正的作用。 “Cloth,” “latitude and longitude” is the book in two. Since ancient music was subordinated to rituals, “Ritual” and “weft” could be studied together. Through the study of rituals in the Western Han Dynasty, we can know that the formation of “Rituals” and “Lewei” are closely related to Erdos Rituals. In ideological content, “Li Wei”, “Le Wei” mainly records many ancient rituals and functions. Li Wei and Le Wei hold the view that ritual and music were important in ancient times not because of their form but because of their positive and anti-humanistic effects.