‘自度曲’的提法源于《汉书·元帝纪赞》,为隐度乐曲之意。至宋代,在词的创作中,其义则为制词与制曲二者的两相结合。但词的自度曲的实践实始自唐五代,北宋、南宋均有继之者,而记录最为明确、具体者,乃南宋之姜夔。与此同时,又有一些作者只制词而并不制乐,并标一新的词牌名,被称为‘自制词’,此风习至明代、清初尤盛。今此二者往往混而为一,均称‘自度曲’。相对于‘以字就音’的创作法,自度曲无疑是一种‘突破’,而根据情感表达的需要,自制新词则在更大的程度上拓展了词的创作空间,是内容对形式的一种‘突破’。但只有真正具有词的特点与韵味的词作才称得上为自制词或已变义的‘自度曲’。 ’Self-degree song’ is derived from ’Han Yuan Yuan Ji Zan’, as the meaning of implicit music. To the Song Dynasty, in the creation of the word, its meaning is the combination of the two parts of the word and the song. However, the practice of Ci’s self-degree is actually from the Tang and the Five Dynasties, the Northern Song Dynasty and the Southern Song Dynasty, and the record is the most clear. In the meantime, some writers only made words and did not make music, and labeled a new alphanumeric name, which was called “homemade word.” This style was learned until the Ming Dynasty and especially in the early Qing Dynasty. Today, the two are often mixed together, all said ’self-degree song.’ Compared with the creative method of “taking the sound of words”, self-degree is undoubtedly a kind of breakthrough. According to the needs of emotional expression, the new words of self-made expand the creative space of words to a greater extent. A form of ’breakthrough’. But only the words that truly have the characteristics and charm of the word can be called self-made words or the modified self-degree song.