1. The defense content does not meet the requirements: the defense content is not prepared and completed according to the specified requirements and standards, which leads to the failure to meet the defense requirements, such as unclear topics, confusing structure, unclear discussion, inaccurate data, etc.
2. Improper research methods: improper research methods, imprecise data processing, and flawed experimental results failed to reflect the due performance and enlightenment.
3. The writing of the paper is not standardized: the paper does not follow the standardized format and reference writing, and does not pay full attention to the language organization and aesthetic feeling of the paper text, which has an impact on the impression, readability and authority of the paper.
4. Lack of research innovation: Based on the existing research results, the research ideas are random, the depth is not enough or the quality defects are too large, which leads to the failure of the defense.
5. Poor performance in the defense process: nervousness, lack of self-confidence or lack of examples, use of common sense of scenes, lack of logical power, etc.
After the failure of defense, it is generally necessary to combine the guidance of defense experts to find and solve problems as much as possible before defense. If you still fail, you need to revise the paper according to the questions, re-examine the paper, and apply for a defense again until you pass.