Objective:To explore the latent classification of adolescent sleep quality, analyze whether there is group heterogeneity in adolescent sleep quality, and explore the effects of demographic variables on different latent profiles.Methods:A cluster sampling of 1275 junior and senior high school students, including 657 boys(51.5%)and 618 girls(48.5%),was used to evaluate sleep quality with Pittsburgh Sleep Quality Index scale, latent profile analysis was carried out, and the differences of different profiles in gender and grade were tested.Results:...