In the research of postgraduate training quality, the research on psychological stress of graduate students is a weak link in the past 20 years. The existing research in China mainly focuses on the basic concept of psychological stress of graduate students, the source of stress, empirical research and basic strategies. At the same time, there are some shortcomings of low level repetition, lack of attention to foreign achievements and insufficient tracking research. Under the background of doubleclass construction, the psychological pressure of graduate students is facing many new problems, so we need to strengthen the research of tracking, empirical research, draw lessons from foreign achievements, attach importance to cross-disciplinary research, and attach importance to the study of stress early warning mechanism of graduate students.