CET(College English Test)是近几年来教育界和社会争论的焦点。它越来越受到社会、学校和学生的高度重视,在促进教学的同时,更多的则是在阻碍着正常教学活动的顺利开展。本文以语言测试中的反拨效应理论(Backwash Theory)为理论依据,从教学活动本身、教师自身素质及学生的学习三个方面阐述了CET的负面反拨效应对大学英语教学带来的影响,并对改革目前的测试手段提出了几点建议。 The College English Test (CET) has been the focus of debate in education and society in recent years. It is increasingly valued by society, schools, and students. At the same time that it promotes teaching, it is more of a hindrance to the smooth development of normal teaching activities. This paper uses the backwash theory in language testing as a theoretical basis, and elaborates the influence of CET’s negative backwash effect on college English teaching from the three aspects of teaching activities themselves, teachers’ own quality and students’ learning. And made several suggestions for reforming the current testing methods.