First, promote academic research. For some research fields, such as humanities and social sciences, art and other fields, it takes longer to precipitate and study in order to have deeper insights and achievements. Extending the academic system of graduate students can provide more time for graduate students in these fields, promote their academic research, and thus improve their academic level and research quality.

Second, ease the employment pressure. In the current employment environment, the employment situation of graduate students is becoming more and more severe, and some professional graduate students even face the dilemma of not finding a job. Extending the academic system of graduate students can alleviate the employment pressure, increase the time and opportunities for students to apply for jobs, and at the same time improve the employment competitiveness of graduate students, so that they can better adapt to society and the workplace.

Third, improve the quality of teaching. Extending the academic system of graduate students can provide students with more study and research time, enable them to better master professional knowledge and skills, and improve teaching quality and students' learning effect. At the same time, it can also increase the communication and interaction between students and tutors and promote academic inheritance and innovation.

Fourth, adapt to social development. In some fields, such as medical treatment and science and technology, it takes longer research and practice to achieve better results. Extending the academic system of graduate students can meet the needs of social development, provide more high-quality talents for these fields, and promote scientific and technological progress and social development.

However, it should be noted that the extension of postgraduate academic system may also bring some negative effects, such as increasing students' learning cost and time pressure. Therefore, when deciding whether to extend the postgraduate academic system, it is necessary to comprehensively consider various factors, weigh the pros and cons, and make a scientific and reasonable decision.