The historical materials contained in the records of rites and music can often be compared and supplemented with each other, which is an important source of information for studying the history of traditional music of all ethnic groups in China. For example, Records of Rites and Music in the History of Han Dynasty, which contains "Song of Sacrifice to the Suburb", "Music in the Room" and "Yuefu", is rarely involved, and is a rare historical material for studying the music of the Western Han Dynasty; The Book of Music in Song Dynasty not only records the measures taken by the ruling class about singing and dancing, works such as Elegance and Ode, as well as the evolution, system and lyrics of imperial court worship, etiquette music and dance from Wei, Jin to Liu and Song Dynasties, but also records folk ballads, Han and Shi Dynasties and thirteen songs, Qing and Shang Dynasties, Daqu, advocating cymbals and acrobatics. "Sui Shu Musical Records" is a record of Su Zhipo's five Dan and seven tunes, the music of eight tones and the seven pieces of Sui music. His books are missing and the materials are precious. Records of Rites and Music in the New Tang Dynasty are richer in historical materials than Records of Music in the Old Tang Dynasty, which can not only make up for its shortcomings, but also be compared with each other. The History of Song Dynasty recorded a large number of lost music books of Song people, and the materials were rare. Music Records of Liao History, Music Records of Jin History, Music Records of Yuan History, etc., recorded the court music and folk music of ethnic minorities such as Qidan, Nuzhen and Mongolia, which are of great academic value to the study of the history of northern ethnic music and the history of music exchange among ethnic groups.