Objective: To explore the feature of alexithymia in adolescents using latent class analysis. Methods: 2017 adolescents from 4 middle schools in Changsha, Hunan province completed 20- item Toronto Alexithymia Scale(TAS-20), Epidemiological Studies Depression Scale(CES- D) and SCL- 90- Somatization. Results: The results indicated that there were three latent classes of alexithymia among adolescents, namely alexithymia group(AG,18%), difficultly emotional expression group(DEEG,35%) and well emotional expression group group(WEEG, 47%)....