The Chang-Zhou group’s four theorists include Zhang Huei-Yian, Zhou Ji, Tan Xian and Chen Tieng-Chuo. They had made comments separatly on Anthology of Ci-poetry, Anthology of the Four Composer’s Ci-poems in the Song dynasty, Ci Bian and Ci Ze. As seen from the history of how to comment on the Tang and Song Ci-poems, Chang-Zhou group’s comments is not only inherit the past achievements, but also have new developments and extensions. Their comments contribute to establish the Chang-Zhou group’s theory about “bi xieng ji tuo”, set up the representative of Tang and Song Ci-poems, give a method to compose Ci-poetry, analyse the method of composing and stress the characteristic of Ci-poetry. It’s a very significant period for comments on Tang and Song Ci-poems. According to the theory and comment of the four anthology of Ci-poems, they change the classics of Tang and Song Ci-poems, and made a influence to the comment on Tang and Song Ci-poems in the late Qing dynasty and twentieth century. This thesis will help to comprehend the development of comments on Tang and Song Ci-poems. Also, the study of Chang-Zhou group’s theory will show a new point of view for reseach and discovery.