Sleep occupies nearly one third of human life and plays an indispensable role in people’s daily
life. To explore the relationship between sleep quality, psychological stress and rumination thinking,
321 college students were investigated by issuing Chinese version of stress perception data measurement
(CPSS), Pittsburgh sleep quality index (PSQI) and rumination response measurement (RRS). The results
as follows: (1) there were significant differences in sleep among different grades; (2) Psychological
stress has a significant negative correlation with sleep; (3) In addition to the tension factor, there is
also a significant positive correlation between students’ psychological load and rumination thinking;
(4) Ruminant thinking plays a mediating role in the influence of College Students’ psychological stress
on sleep quality. It is concluded that psychological stress is one of the important factors affecting sleep
quality. It defines the intermediary significance between psychological stress and sleep quality, the impact
of college students’ psychological stress on sleep quality is further improved.