From the perspective of socia-linguistics, the concept of meaning infection is put forward, and he two major approaches of meaning infection in lexical affective meaning changes are analyzed.

本文从词语的概念意义、比喻联想意义及情感意义三方面的不对等，分析其所反映的文化内涵，从而说明深入理解词语的文化内涵对外语教学的重大意义。