Theme is the theme and core of graduation thesis, and it is the theme thought extracted from the analysis, research and observation experience of exhibition. The relationship between the theme and the material of a graduation thesis is just like the relationship between "bone and meat". Therefore, occupying and selecting materials around the theme is the first principle of collecting materials. We should pay attention to overcoming the choice of materials that have nothing to do with the theme and have little to do with the word count, and fully consider the actual needs of the content expression of graduation thesis.

(2) Select typical materials

The typical materials of graduation thesis mainly refer to the materials that can reflect the essence of objective things and * * *. There are all kinds of materials around the theme, some can reflect the essential attributes of objective things, some only involve the essence of things, and some may have nothing to do with the essence of things. Therefore, it is necessary to summarize and sort out the collected materials, pay attention to the typicality of the materials, and don't write all the materials related to the theme into the graduation thesis.

(3) Choose real materials

The materials of graduation thesis must conform to the objective reality and accurately reflect the objective things, so that the graduation thesis can achieve the unity of academic and scientific. So when choosing materials, try to choose first-hand materials. If second-hand materials need textual research, you'd better check the original text. At the same time, we should also pay attention to the local truth and the overall truth of the material.

(4) Selecting new materials

Based on novelty and novelty, new materials can reflect new technologies, new ideas and new things in time, making the graduation thesis more contemporary and fresh, and more academic and applied. With the rapid development of social science and technology, the materials related to the research topic of graduation thesis may be vast and dazzling. Writing new materials into graduation thesis can not only reflect the author's keen vision, but also show the author's ability to control new materials. Of course, new materials are not completely equivalent to real or completely reliable materials. Therefore, when using new materials, we must repeatedly and carefully identify and analyze them before using them. Of course, for those new materials that have been appraised by experts, they can be used directly.