Abstract
This article gives an outline of the concept "critical thinking" and introduces the auther's practice which develops students' critical thinking attitude using questionnaire technique. Seen from students' self-evaluation, they almost could develop an attitude to examine infomation of the course or textbook. But some students had an attitude that they should obey teacher's words. It is suggested that we must educate students with the recognition that such frame of recognition is difficult to change. The relation between media literacy and critical thinking is also discussed.