The application of corpus technology in English teaching and research has become a hot point in the development of corpus linguistics.This paper,based on the constructivism and data-driven learning theories,uses the empirical research method to explore how to set up a micro corpus in professional English teaching and how to build a “data-driven” teaching mode so as to cultivate the students’ self-regulated learning ability.The experimental results show that the self-regulated learning mode based on micro corpus can not only effectively improve the students’ academic performance,but also inspire their learning interests and potential,enhance the consciousness of cooperation and change the learning attitude and learning habits.In this way,the students’ autonomous learning ability takes shape.