1. The theme does not conform to the scope of journals: each academic journal has its specific research field and theme scope. If the theme of your paper does not match the theme of the journal, then your paper is likely to be rejected.
2. The research method is unclear or unreasonable: If your research method is unclear or unreasonable, the reviewers may think that your paper has no scientific value, so they will reject it.
3. The quality of your paper is poor: If there are serious grammatical mistakes, spelling mistakes or format problems in your paper, the reviewers may think that your paper is of poor quality and will reject it.
4. Repetition of paper content: If the content of your paper is highly repetitive with the published paper, the reviewer may think that your paper is not novel, so it will be rejected.
5. Insufficient data or inaccurate analysis: If your paper lacks sufficient data support, or the data analysis is inaccurate, the reviewer may think that your paper is unconvincing, so it will be rejected.
6. Paper structure is chaotic: If your paper structure is chaotic and there is no clear introduction, methods, results and discussion part, then reviewers may think your paper is difficult to understand, so they will reject it.
7. The paper violates the ethical regulations: If your paper involves human or animal experiments, but it does not follow the relevant ethical regulations, then the reviewer may think that your paper is immoral, so it will be rejected for one second.
8. There is no clear hypothesis or conclusion in the paper: If there is no clear hypothesis or conclusion in your paper, the reviewer may think that your paper has no depth, so it will be rejected.