How to efficiently complete classroom teaching tasks in limited classroom time, but also to train and exercise students' various abilities as the core? Classroom teaching is the main body of quality education, practical ability, innovative spirit of training, should first of all from the classroom teaching to break through. Improving the efficiency of classroom teaching has become the top priority at present. The so-called "efficient classroom" is to use as little time as possible to obtain the maximum teaching benefits of teaching activities. To carry out the "efficient classroom" seminar, it is summed up to reduce two improvements: to reduce the teaching burden of teachers, to reduce the academic burden of students, to improve the teaching efficiency of teachers, to improve the learning efficiency of students. Finally, the goal of improving the quality of education and teaching in schools as a whole is achieved. This is also the fundamental meaning of building a harmonious campus and a happy campus.