This paper discusses the correspondence between phonetics of Song and theories such as Chinese dialects,structural linguistics,comparative lingoistic, the vocabulary diffusion theory,Under the premise that ancient and modern Chinee can be compared with each other.The thesis focuses on the Song Dynasty in the Phonological history of Chinese,and the process of Chinese development will be reflected in modern synchronic dialects,to discuss the correspondence between Song and modern Chinese dialect phonetics.The second chapter is to discuss, from a macro viewpoint, the Song phonetics in the history of Chinese phonetics,to determine the tone of the significance and value of the Song Dynasty.The third chapter about the phonetics of Song performance is to explore several documents, including the Sì Shēng Děng Zǐ, Qiē Yùn Zhǐ Zhǎng Tú,Qiē Yùn Zhǐ Nán,Jí Yùn,Jiǔ Jīng Zhí Yīn,Wǔ Yīn Jí Yùn,Gǔ Jīn Yùn Huì Jǔ Yào Huáng Jí Jīng Shì Shū Shēng Yīn Chàng Hè Tú.The fourth and fifth chapters discuss the Song tone reflected in the literature on phonetics and observe its effect on modern Chinese dialect.Chapter fourth discuss the literature in Song Dynasty as reflected in initial discussions,including ancient initial Xia as voiced velar fricative,labial sound opening and closing mouth,initials Zhi and initials Zhau.Chapter five discusses the final of Song,as reflected in literature,including the fuzzy boundaries of divisions III and IV,rhymes Xie and rhymes Zhi. divisions III move to divisions I in initials Jing,also the attitude of Song Dynasty for syllable analysis. Discussion of the macro phonology in Song Dynasty,literature review, phonetics of Song Dynasty characteristics as a common language and comparison with the modern dialect are also covered.Differs from previous studies is that previous study Chinese dialects to Guǎng Yùn and Qieyun. Early Medieval Department rhyming book System, changes to the Song sound as dialects evolved.To master dialects evolve,the paper has its originality three original,namely:First,from the comparative literature and voice phenomena,it determines determining Song tone in Chinese phonetics history.Second,the Song Dynasty of the corresponding phonological in modern Chinese dialects,that the relative distance between Song and modern Chinese dialects,as the basis of future drill down even further Chinese dialects specific phonological phenomenon in the history of phonology absolute position coordinates.Third,from the Song phonetics literature for medial syllables arranged in position,inference then literati writing phonetics attitude has become more independent by a rhyme in this attitude also affects rhyme book writing creation during the Ming and the Qing Dynasty.