Efficient classroom is a classroom where students actively study and think. It is every teacher's goal to create an efficient classroom and improve the efficiency of 45 minutes of teaching. Although the knowledge level, professional ability, ability to control the classroom and students' situation of each school are different, the ways and means to realize efficient classroom are also different, but the purpose is to make students truly become the masters of learning, so as to achieve the purpose of reducing students' excessive burden, improving efficiency and efficient classroom.