Objective To explore university students′sleep quality in Southwest China and to present their sleep issues.Meanwhile

the investigation is done to analyze reasons behind keeping late hours and skipping early class

and to provide a theoretical basis for cultivating good habit of keeping early hours.Methods The research was conducted through questionnaire and interview among 452 university students.The questionnaire covered time of sleep and get up

sleep quality

reasons for skipping class

total sleep time and reasons for sleep insufficiency.Results were statistically analyzed.Results It was found that 45.3% of male students slept later than 00:30am

while the rate for female students was 29.3%;27.4% of male students got up later than 9:00am

while the ratio for female students was 11.8%;42.0% of university students′sleep time met standards;30.0% of university students skipped class or came late to early class.Personal sleeping habit and sleeping environment were main reasons for sleep insufficiency.Conclusion Universities should take actions on the aspects of cognition

setting example

establishing reward and punishment system

and constructing dormitory culture in order to help students cultivate good habit of keeping early hours and grow in good health.