Before submitting a paper, you can choose according to the requirements of the journal. Different journals have different requirements for submission, so it is suggested to screen from these hard indicators: repetition rate requirement, word count requirement and inclusion direction. For example, Changxiao Medical Network can screen out journals suitable for its own papers according to these indicators. After selecting several journals that meet the requirements, make a comprehensive comparison of these journals, and finally choose a journal that is suitable for your paper submission.