Objective: To explore the relationship among dormitory interpersonal relationship, emotion
regulation and sleep quality of college students. Methods:The dormitory interpersonal relationship
diagnostic questionnaire, the emotion regulation questionnaire and the Pittsburgh sleep quality index
questionnaire were used to investigate the college students in a college in Yantai. Results:There was no
significant difference in dormitory interpersonal relationship and sleep quality between the sexes, and
girls were significantly higher than boys in the use of expression suppression strategies. Dormitory
interpersonal relationship, expression suppression strategy, cognitive reappraisal strategy and total score
of sleep quality (PSQI) were significantly correlated. Expression suppression and cognitive reappraisal
played a mediating role in the relationship between dormitory interpersonal relationship and sleep quality,
and gender played a moderating role in the mediating role of cognitive reappraisal. Conclusion:College
students’ dormitory interpersonal relationship can affect sleep quality through emotion regulation
(expression suppression, cognitive reappraisal), and this phenomenon is more obvious in male students.