To analyze the influence of application of Information Technology in classroom teaching on teaching structure, teaching style and teaching interaction by using the improved Flanders Interaction Analysis System, combined with the qualitative research method. Rational use of Information Technology in classroom teaching has obvious advantages in creating learning situations and can change the classroom teaching structure effectively. The higher degree of Information Technology is used, the higher rate of participation the students show. The application of Information Technology in classroom teaching will not only bring the teachers' leading role into full play, but also fully demonstrate the students' major role of ‘autonomy, exploration and cooperation’.