This study examined the positive and negative effects of reading experiences on adolescents and characteristics of each reading experience. For this purpose, we analyzed descriptive responses regarding positive and negative reading experiences collected via a survey of 1,000 adolescents. Based on the results, the factors of positive and negative reading experiences of adolescents were classified into an external factor(home, school, society, text) and internal factors of individual. It was found that the reasons for the reading experience differed by gender, school level, and reader type. The specific contents of the responses were then analyzed in detail confirming that even if adolescents had similar experiences, they perceived the reading experience positively and negatively differently depending on the presence or absence of “choice and autonomy”, “new experience or emotion”, and “communication with others”.