Ambiguous is a common parole phenomenon This paper analyzes the generative reasons of ambiguous parole: the ambiguity of words themselves; the damage of semantics; raising the degree of semantic accessibility difficulty; the different selections concerning multiple semantics; the usage of semantics in multiple directions This paper also lays emphasis on the discussion on the ambiguous parole generated from rhetorical relevance This paper summarizes the ways of rhetorical relevance generating ambiguous parole: the relevance of different semantic points; the usage of ambiguous semantics; the distortion and extension of ostensive information; the usage of different semantic range of same word; the usage of false information；inclining relevance accidentally and so on In addition, this paper holds that the generation process of ambiguous parole is often the generation process of dynamic context