P.E. teachers should make teaching contents flexibly on the basis of textbook contents. Instead of a single running, high jump, gymnastics, rope skipping and other exercises, more boring exercise content in the form of games to students, arouse students' interest, in order to achieve the purpose of exercise. But teachers should also grasp the flexible scale, focusing on the actual learning situation and students' safety, and can not arbitrarily change the teaching content out of thin air [3].