To examine the effects of informal education styles on adolescents’ personality traits. Methods: 10,878 junior high school students in C city were the subjects of the study. The General Information Questionnaire and the Personality Self-Rating Scale for Junior High School Students were used to investigate the general situation and personality characteristics of the students, respectively. Independent samples t-tests were conducted to compare the differences in adolescent personality development characteristics, and the latent category model was used to classify adolescent personality traits. RESULTS: Adolescent personality types were categorized as normal (5.29%), withdrawn (7.53%), stressed (37.76%), and positive (9.41%). Informal education had the greatest impact on the withdrawn personality adolescents, followed by the positive type, and the ordinary type was the least affected. CONCLUSION: Informal education methods are important in educating and guiding adolescents in terms of personality, and the personality types suitable for informal education are ranked as withdrawn>positive>stressed>ordinary.
