As a training school, it is common to change teaching materials. The main reason is that the updating speed of various majors is relatively fast now, and schools need to keep up with the market trend, so they will change teaching materials. Generally, it will be more suitable for teaching after changing teaching materials. Sometimes, because of the high correlation between the grade examination of the national labor department and the teaching materials, the old sports insurance bureau will change the teaching materials, and the school will also change the teaching materials.