(1) Academic principle Theoretical principle is one of the important characteristics of graduation thesis. Graduation thesis is an academic theoretical article that conforms to one's major. It should not be written as a work summary or research report, nor can it be written as a purely professional exposition, let alone an article unrelated to the major. Papers that have nothing to do with the major cannot pass the exam in principle. The so-called knowledge refers to more professional and systematic knowledge. The so-called academic nature means that the content of research and discussion is specialized and systematic, that is, taking a professional problem in the scientific field as the research object. From the content, academic papers are obviously professional. Academic thesis is the author's use of his own systematic professional knowledge to demonstrate or solve unresolved academic problems in a certain professional field. From the perspective of language expression, academic papers use professional terms and professional chart symbols to express the content, mainly for peers, so we don't care whether others can understand it, but we should express academic problems concisely, accurately and standardly, and professional terms are also widely used. So we should pay attention to its academic requirements. (2) The principle of integrating theory with practice and paying attention to practical significance. The topic of graduation thesis is very extensive, and all aspects and fields of sports can be used as the topic of thesis. Marxist epistemology tells us that theory comes from practice and theory serves practice. Therefore, the topic selection of graduation thesis should first pay attention to the integration of theory with practice, pay attention to the practical value of the topic selection, and choose a topic with practical significance. (III) Principle of Objectivity The so-called objectivity mainly refers to objectively grasping one's ability to write a graduation thesis. In other words, the direction, size and difficulty of the topic should be adapted to one's own knowledge accumulation, ability to analyze and solve problems and writing experience, and one should have an objective estimate of oneself. First of all, we should fully estimate our knowledge reserves and ability to analyze problems. Because the accumulation of knowledge and ability is a long process, it is impossible to make rapid progress in writing a graduation thesis. Therefore, when choosing a topic, we should do what we can, objectively analyze and estimate our abilities. (4) The principle of novelty The novelty of the topic is the soul of the article. The so-called novelty means expressing one's new ideas, new ideas and new ideas in the paper, or giving people new enlightenment in a certain aspect or point. Novelty is the life and value of a paper. Novelty can be grasped from the following aspects: First, the topics, viewpoints, materials and argumentation methods are all new. This kind of paper is well written, with high value and great social influence, but it is difficult to write. Second, demonstrate old topics with new materials, so as to put forward new or local new ideas and new views. Third, redo the existing topics with new angles or new research methods, so as to get all or part of new ideas. Fourth, questioning the existing viewpoints, materials and research methods can inspire people to rethink the problem, although they have not put forward their own new viewpoints. (5) Moderation principle Moderation of topic selection is an important factor for the success of graduation thesis. The so-called moderation means that the size, difficulty, old and new topics should be moderate and avoid going to extremes. First, major issues and minor issues: make a mountain out of a molehill, or choose the minor and abandon the major to avoid major issues and minor issues. Because the topic is too big, the materials are hard to find and control, and time is not allowed. Second, the old questions and new questions: we should choose new questions without excluding the old questions, create new questions for the old questions, and deepen new questions. Third, difficult questions: choose a topic with moderate difficulty. The so-called problem is that you don't understand this problem at all, or only know a little, or the information about this problem is too small and scattered, or you don't have the knowledge structure needed to study this problem, which can't be made up in a short time. You can't choose such a topic. Easy problem is a problem that can be completed without any effort. Even if such a topic is completed, it will not be much exercise for yourself and the value will not be too high. Never choose such a topic in order to save trouble. Choose a topic with moderate difficulty. Fourth, hot and cold questions: did not catch up with the wave, do what you can. Because of the hot topic, there are many people studying it, and it is not easy to make new breakthroughs. Unpopular topics, with little data, are difficult, but some unpopular topics can provide new content for discipline construction and often achieve unexpected results. (VI) Feasibility Principle The so-called feasibility means that the topic of graduation thesis must be practical, and it cannot be generalized and irrelevant. Because the topic selection of a thesis is often limited by subjective and objective conditions. Although the topics of some papers are very good and valuable, due to the limitations of the author's own conditions or research conditions, even if the topics are selected, they cannot be completed in the end. To grasp the principle of feasibility, first, we should consider whether there are data or data sources. Information is the basis of thesis writing. Without information or insufficient information, the paper can't be written, and even if it is barely written, it is not convincing. The second is to understand the research trends and achievements of the topic selection, roughly grasp the difficulties that may be encountered in writing, and avoid blindness and ineffective work.