Not only qualitative and quantitative analysis,but also synchronic and diachronic investigations were applied in this paper, we also absorbed and made full use of the latest theories in linguistics, such as grammaticalization theory,metaphor theory in cognitive linguistics,subjectivity & subjectivisation theory in functional linguistics,and so on.

This article not only makes a diachronic study and analysis of the appearance of "Shua Zi" and "Wanr" in the Chinese language respectively,but also analyzes the reason why "Shua Zi" can long exist in modern Chinese and why it can be replaced by "Wanr".

The article made diachronic investigation and synchronic analysis of the appearance of "Shuazz" and "Waner" in Chinese,and then analysed the reasons for the long-term existence of "Shuazi" in modern Chinese and for its being eventually substituted by "Waner"、Finally,it inferred the time when "Waner" would entirely substitute"Shuazi".