The word 'Xing' in The Book of Songs has long fascinated scholars in terms of its quality，characteristic features and functions.Meantime，the construction of form，the realization of meaning and the method of authentication have also been confusing to scholars.With an examination of all the theories on 'Xing' and an analysis of the poems，it can be concluded that 'Xing' is the structural method of chapterbased speech organization，with specific characteristics in form.'Xing'，as a structural combination，is made up of 'Xingti' and 'Yingti'.'Xingti' starts and guides the context，while 'Yingti' carries the practical meaning.There should be three types of meaning relations between 'Xingti' and 'Yingti'—'Lianxing'，'Yuxing' and 'Yinxing'.
