Based on the theory of Seligman’s positive psychology, it is understood that positive qualities are great importance to both individual and social aspects of adolescents in Internet interaction. This paper studies the advantages and disadvantages of adolescents’ positive qualities in Internet interaction. Its main advantages are humor, originality, citizenship, fairness, love and love learning, and its shortcomings are prudence and self-control. It should understand the positive qualities of young people, provide targeted guidance for them to cultivate the relatively lacking positive qualities, pay attention to the development and growth of young people, and make contributions to the country and society while improving ourselves through Internet interaction.