In the past, the whole province was published by People's Education Press, but now it has become the seventh grade, the eighth grade and the ninth grade, and the textbooks used in schools are also different, with various versions. There is a junior high school in our village who went to Xi 'an for two years, and the physics of the second grade is mechanics. As a result, he returned to our place and went to the third grade. Because the textbook is not the same version, we happen to have electricity in grade two and mechanics in grade three. As a result, he returned to the third grade to study mechanics, which is equivalent to repeating the previous content. Because the contents of the textbooks are inconsistent, the contents of the three-year junior high school study are unchanged and written according to the syllabus, but the tasks assigned to the three-year junior high school by different versions of the textbooks are also inconsistent, which leads to this phenomenon. At the same time, the English, mathematics and other textbooks he brought back are different from ours. We are under the jurisdiction of Xi 'an. He studied in Xi for two years. It can be seen that the current teaching materials are all used for their own purposes, and there is no unified norm at all.