词的早期的发展过程是词学研究中的一个重要问题。本文试图讨论词如何由依曲填写而演变成格律化的文学体裁。笔者认为,早期的仿写填词是导致词发生律化的根本原因。仿写填词使原来长短、平仄等都不统一的早期词,变成了篇有定体、句有定数、字有定声的“律词”。仿写填词使依附于乐的歌词开始摆脱了音乐的束缚,逐渐成为一种独立的文学形式。 The early development of Ci is an important issue in Ci study. This article attempts to discuss how words have evolved into a stylized literary genre from songwriting. The author believes that the early imitation of lyrics is the root causes of the word occurs. Imitation lyrics to make the original length, flat, and so are not unified early words into articles with fixed, sentence fixed, the word has a fixed “law.” Imitation lyrics to make the lyrics attached to the music began to get out of the shackles of music, has gradually become an independent literary form.