自中国加入WTO以来,与世界各国的经贸往来越来越密切,商务信函在商务沟通中所起的媒介作用举足轻重。因此,礼貌原则在商务信函写作中的重要作用不容小觑。本文从实践性角度出发,探讨Leech的礼貌原则在商务英语写作中的具体应用,以期引起人们的重视。 Since China’s accession to the WTO, economic and trade contacts with other countries in the world have become closer and closer, and the role played by business letters in business communication has been decisive. Therefore, the important role of politeness principle in business letter writing can not be underestimated. This article from the practical point of view, to explore Leech’s politeness principle in business English writing in the specific application, with aroused people’s attention.