It takes many efforts to avoid multiple rejections of papers. Here are some suggestions to help you improve the quality and pass rate of your papers:

1. Define the research objectives and problems: Make sure that you have defined the research objectives and problems before writing your thesis. This will help to ensure that your paper is targeted and practical.

2. Choose appropriate research fields and journals: according to your research interests and achievements, choose fields and journals related to your research topic. Understand the submission requirements, review criteria and reader groups of journals, so that your papers can better meet the requirements of journals.

3. Ensure the quality of the paper: read carefully and follow the submission guide of the journal to ensure that the format, language and citation of your paper meet the requirements. In addition, ensure that the content of the paper is innovative, logical and readable.

4. Plan ahead: Leave enough time to revise and improve the paper. Don't wait until the last minute to start revising, which may increase the risk of rejection.

5. Seek peer review: Ask your peers or tutors to review your papers before submitting them. They may find problems that you have overlooked or make valuable suggestions.

6. Keep a positive attitude: In the face of rejection, keep a positive attitude. Analyze the opinions of peer review, learn from them and improve your thesis. Don't give up because of one or several refusals, but continue to strive to improve your research level.

7. Revise before submitting: If you think there are reasonable suggestions for revision in the rejection, you can consider revising the paper before submitting it. However, please ensure that these amendments can solve the problems raised by reviewers and improve the acceptance rate of papers.

In a word, to avoid the rejection of papers many times, the key is to improve the quality of papers, choose appropriate journals and follow the submission norms. At the same time, maintaining a positive attitude and continuous efforts are also key factors.