With the development of science and technology, more and more classrooms have adopted the teaching mode of combining computer screen and blackboard.On the one hand,in this mode, the use of PowerPoint has become a favorite of teachers.It is convenient for teachers to use PPT to show their academic achievements.They can highlight the words and headings to attract students' attention.On the other hand,Using PPT to display course knowledge is easy for students to watch and extract notes, so that they can grasp the knowledge more clearly. In my opinion,the benefits of using powerpoint are many,so the use of PPT in daily life is more and more welcome.