Abstract: In recent years, some researches have studied applying on-line corpus in English classroom teaching and proved it helpful in improving teaching efficiency. However, the existing corpora are mainly designed and compiled for linguistic research and investigation, with large scale and a variety of topics and register, not conformed to the language teaching requirements. Besides, most corpora are restricted to the study of vocabulary, listening and oral English for General Purposes (EGP) while for English for Specific Purposes (ESP), e.g., Business English (BE), are comparatively deficient. In view of this, this study reports on a pilot program, under the guidance of College English Curriculum Requirements, mainly about how to develop a BE teaching platform system, based on a self-compiled corpus by employing the techniques of Java programming and SQL database. It is expected through the platform to realize online inquiry, retrieval and sharing corpus resources over the whole campus and facilitate the teaching and self-teaching of BE with no time and space limitation. The platform is applied to explore a corpus-based teaching model which focuses on students’ autonomy meanwhile mobilizing teachers’ initiative in BE teaching.