音乐史学中所讲的“礼”与“乐”是两个既相互独立而又相辅相成的重要概念。在长达千年的中国封建王朝政治统治过程中,随着各个历史阶段的不同政治与经济文化的变化发展,“礼”与“乐”也始终处于相应的变化之中,但无论如何其本质功能和地位作用是相对稳定的。“崩乐坏原本的意义主要指政治性的,是指某一个王朝政治规整制度的瓦解和崩塌。但本文中所论主要从音乐史的角度对两者的变化进行一定的论述。 In music historiography, ”ceremony“ and ”music“ are two important concepts which are independent and mutually reinforcing. During the political reign of the Chinese feudal dynasty for thousands of years, with the development of different political, economic and cultural changes in various historical stages, ”ceremony“ and ”music" have always been in the corresponding changes. However, no matter How its essential function and status are relatively stable. The original meaning of collapse is mainly political, refers to the disintegration and collapse of the political regularity of a certain dynasty, but the dissertation discusses the changes of the two mainly from the perspective of music history.