词的正变是一个经久性的话题,一般而言,正变观依附于风格的分类,或以婉约为正、豪放为变,或者反是。宋人论词,是略以‘词家体例’为正的。沈义父《乐府指迷》曰:‘作词与诗不同,纵是花卉之类,亦须略用情意,或要入闺房之意。’‘如直咏花卉,而不着些艳语,又不似词家体例,所以为难。’大约歌词之起,本是簸弄风月,矜夸才情,这在后来便被看作是词的一种特质。宋人亦多以此自律,而对风格豪放不羁、瘦硬奇险的词一以变调视之,如以诗入词的苏轼词,便被李清照斥为‘句读不葺之诗’, Positive change of words is a long-term topic, in general, is changing the style attached to the classification, or grace is positive, unrestrained, or vice versa. Song’s treatise, is a little “Ci Jia system” is positive. Shen Yi-fu “Yuefu refers to the fans,” said: ’lyricist and poetry is different, vertical is flowers and the like, also have to use a little affection, or into the boudoir meaning. Such as straight Yong flowers, but not some Yan language, but also not like Ci-style, so embarrassed. ’Around the lyrics, this is a teaser, a boastful talent, which was later seen as a character of the word. The Song people also more self-discipline, and uninhibited style uninhibited, thin hard and rare words to change the tune, such as the poem into the word Su Shi, Li Qing was denounced as ’not read the sentence of poetry’