Four years. The doctoral program of literature and art in Shandong University lasts for 4 years. The four-year study period can be divided into four stages: tutoring learning stage, literature review and postgraduate thesis writing stage, academic activities and scientific research practice stage, thesis defense and degree evaluation stage. The specific academic system can also be appropriately adjusted according to personal circumstances, academic performance and research progress. In short, an average of about 4 years of schooling can provide enough time and opportunities for graduate students to conduct in-depth research and exploration.