本文从介绍语言的模糊性和解释语言的语用功能概念入手,分析涉外文秘英语写作的特点和重要性,并从礼貌、真实、效率、灵活、谨慎和委婉等角度阐释了模糊语言在涉外写作中的语用功能,总结了模糊语言在语言交际中的意义和作用。 This article begins with the introduction of the fuzziness of language and the concept of pragmatic function in explaining the language, analyzes the characteristics and importance of English writing in foreign secretary, and expounds the meaning of vague language in foreign language writing from the aspects of politeness, truthfulness, efficiency, flexibility, discretion and euphemism In the pragmatic function, summed up the meaning and role of vague language in language communication.