Since the 1990s Chinese scholars have introduced the theories of grammaticalization and meanwhile conducted systematic and deep studies into the grammaticalization of Chinese language from such aspects as routes to grammaticalization,mechanism of grammaticalization,and diachronic evolution and synchronic analysis of grammaticalization.

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".