Shaanxi People's Education Publishing House Spring 2020 Series New Middle School Textbooks Fully Understand the Biology of Grade Seven Part II Xue Jinxing Editor-in-Chief Teaching in the Middle School Attached to Beijing Normal University. Teaching materials are not only the basic materials for teachers to carry out teaching activities, but also the main materials for students to learn, so the quality of teaching materials directly affects the development of the whole teaching activities. In recent years, the new biology textbook published by People's Education Press has been studied separately. The results show that the way of writing, the angle of entry and the choice of content all follow certain rules, and reflect the following characteristics.