Abstract:Objective To investigate the epidemiological characteristics of freshmen's sleep quality in Jiamusi University, and to analyze the correlation between anxiety, depression and sleep quality, in order to provide scientific evidence for the development of targeted intervention measures. Methods Using the stratified and cluster sampling method, 928 freshmen from Jiamusi University were selected. Pittsburgh sleep quality index was used to evaluate the quality of sleep, and self-rating Anxiety Scale and self-rating Depression Scale were used to evaluate the mental health status, and the data were canonical correlation analyzed by SPSS19.0. Results University students' anxiety, depression, PSQI total score were (31.03 ± 7.43), (44.03 ± 12.13), (6.50 ± 2.54), respectively. Sleep problems (PSQI ≥ 8) detection rate is 32.11%, and females were higher than males with significant statistical difference; canonical correlation analysis showed that sleep quality and anxiety, depression in the 1, 2 pairs of canonical correlation coefficients were 0.68887, 0.62901, and two pairs of canonical variables cumulative contribution rate reached 100%. Canonical correlation analysis showed that sleep drug usage and daytime dysfunction were associated with anxiety and depression. Conclusions The overall situation of University students' sleep quality is not optimistic. Psychology of anxiety and depression is an important factor affecting the quality of sleep, and should be paid more attention. Mental health counseling should be put into the education agenda.