【Abstract】Coercion theory illustrates the conflict between constructional meaning and lexical meaning both semantically and grammatically. Are there still other functions of coercion besides semantic and pragmatic functions？ Do they function simultaneously or respectively？ This paper， by sorting out the features of coercion， points out that both a lexical item and a construction can be coerced to change their properties to fuse with each other. Meanwhile， coercion relations between constructions and lexical items and coercion relations between constructions are proposed.
　　【Key words】coercion； constructional meaning； interaction
　　【作者簡介】沈艳萍（1980- ），女，汉族，贵州麻江人，硕士研究生，讲师，云南师范大学外国语学院，研究方向为：认知语言学及语言哲学。

1. Introduction

　　“Coercion” is a concept originating from computational linguistics， which is used to describe the conflict between constructional meaning and lexical meaning. Since Construction Grammar appeared， “coercion” has turned into an important term in construction grammar， and coercion principle has become one of the major principles used to discuss semantic relations.

2. Studies of construction coercion

　　Linguistic Gestalts， written by Lakoff （1977）， is the first work about construction grammar， in which he argues that meaning of a grammatical whole is not combined from its component parts， but that construction itself counts. This statement has implied the function of “coercion”. Coercion， as a concept， derives from the interactive relationship of lexicon meaning and construction meaning. Many scholars， such as Sag