Abstract: CBI (contentbased instruction) is the integration of a particular content with second language, aiming to equip students with the content area of the subject matter and simultaneously increase their language skills. Since it was named in the mid 1980s, CBI has received extensive attention from scholars home and abroad. 6Ts approach under CBI provides a flexible method to second language teaching, including theme, text, topic, thread, task and transition. This paper tries to discuss the application of 6Ts approach in Business Communication Skills under CBI.