As a basic teaching method in modern high education, seminar is popular among universities and colleges all over the world. Combined with the three modes of seminar in current stage, which are “let things drift” style, “strict extra-curricular and loose curricular” style and “loose extra-curricular and strict curricular” style, their strengths as well as weaknesses were estimated. In the research of seminars and results of famous universities in the world as well as attempt and practice in teaching revolution, new mode of seminar was raised. The new mode integrated preparation, teachers’ roles and study group organically. Finally, the teaching mode of system oriented style both inside and outside was raised.