Nowadays, fostering study interest and learning initiative under the guide of the teacher has become the mainstream of study in the new century. Cooperative study is a way or strategy centering on students’ study, which pays attention to interaction between teachers and students. Discussion in the English Class is the key step that carries out the interaction. Based on the features and principles of teaching in middle schools, this paper firstly explains the importance of class discussion deeply，then it deals with some main existing problems on discussion in the English class of middle schools. Finally, this paper also puts forward some useful solutions to these problems.