1. Determine the research field: First of all, you need to know which subject field your research belongs to, such as biology, chemistry, physics, etc. This will help you narrow down the search scope of your publication.

2. Understand the impact factors and zoning of periodicals: impact factors are indicators to measure the influence of periodicals, and zoning is to divide periodicals into different grades according to impact factors. Choosing journals with high impact factors and high partitions can improve the publishing opportunities and influence of your papers.

3. Read the submission guide of journals: each journal has its own submission requirements and format specifications. Reading these guides carefully can help you understand the specific requirements of journals, thus improving the success rate of submission.

4. Pay attention to the theme and research direction of the journal: When choosing a journal, pay attention to whether its theme and research direction are consistent with your research content. If the theme and research direction of the journal are inconsistent with your research content, then your paper may be rejected.

5. Refer to peer review opinions: Before submitting a manuscript, you can consult your peers or tutors to find out whether they have recommended journals. In addition, you can also check the papers published in this field and find out which journals they are published in.

6. Use databases and tools: There are many databases and tools that can help you find the right journals, such as WebofScience and Scopus. These databases can screen out journals that meet the requirements according to keywords, subject areas, impact factors and other conditions.

7. Patience: You may encounter many setbacks during the submission process, but don't lose heart. As long as you keep looking for the right journals, you will eventually find the one that suits your thesis.