Yes, after the doctoral thesis is finished, it needs to be revised by the tutor. Tutor's revision and feedback are very important to the quality of doctoral thesis. In general, doctoral students need to submit the first draft of the thesis to the tutor for review and revision, which may need to be revised and adjusted repeatedly to ensure the quality and accuracy of the thesis.

In the process of revision, the tutor can provide suggestions from the structure of the thesis, the logic of argumentation, the rationality of research methods and so on to help doctoral students further improve their thesis level. In addition, the tutor can also provide guidance on literature citation and reference format to ensure that the paper is standardized and meets academic requirements.

Therefore, after completing the big thesis, doctoral students should take the initiative to submit the thesis to the tutor for review and revision, so as to further improve and optimize the thesis before final submission.