Based on complex adaptation system theory,this paper aimed to investigate the evolution of Chinese children address metonymy system by adopting the method of corpus linguistics.The study found that:the system consisted of 47 words from 12 conceptual domains;because the evolution of the system was influenced by multiple dynamic motivations,and manifested the characteristics of the non-lin-ear evolution of complex system;the child cognitive model also evolved from low-level cognitive mode to high-level cognitive mode.