商务英语是一门应用型的边缘交叉学科。它以语言学与应用语言学为理论指导,应用于商务、经贸等领域里,是英语中一种重要的功能变体。作为专门用途英语的一个重要分支,理论研究的缺乏或不深入已经成为商务英语教学质量提高、商务英语学科建设以及商务英语人才培养的瓶颈。本文以系统功能语言学为理论框架,试图寻找系统功能语言学对商务英语教学的启示。 Business English is an applied edge-crossing discipline. It is guided by the theory of linguistics and applied linguistics and applied to the fields of business, economy and trade. It is an important functional variation in English. As an important branch of ESP, the lack of or in-depth theoretical research has become the bottleneck of improving the quality of business English teaching, business English discipline construction and business English training. In this paper, the system of functional linguistics as the theoretical framework, trying to find systematic functional linguistics inspiration for Business English teaching.