The purpose of this research is to investigate how adolescents view TV trendy dramas, and whether the behavior and perception of their peers were influenced by such dramas. The adolescents’ subculture was also observed through this research. Data were collected using the focus group discussion method during three interviews with the subjects. The venue of the interviews was one of the home economics classrooms in a junior high school in Taipei city. There were seven 8th grade interviewees in total: three boys and four girls. They watched more than five TV trendy dramas annually. Research tools include interview outlines, video/audio equipment, and interview itinerary. The results of this research were: 1. The definition of TV trendy drama by adolescents was: there has to be famous pop idols in these TV trendy dramas. the stories have to be realistic and logical, void of excessive romantic fantasies, meaningless fights, and loud local gaudiness. These dramas should be refreshing, quick tempos, neat and comic plots, as well as intriguing openings and happy endings. There should be at least twenty episodes for each drama, and the length of each episode should last sixty or ninety minutes, but never should there be redundant plots to prolong the story. 2. The adolescents began to watch these dramas because of random channel-browsing, attraction of preview clips/ advertisements, or recommendation from friends. There were also changes of thoughts and behaviors among their peers. 3. The sub-cultural phenomenon among adolescents and their peers were: (1) the personal traits of strong-minded leaders influence the rest of the group, while these adolescents develop their recognition and sense of belongingness through these interactions; (2) girls are fond of TV trendy dramas, whereas boys are mostly passionate about online games and movies. 4. The interviewed adolescents regarded it unacceptable that their parents forbid them to watch TV. They also believed that their parents were over-concerned. However, the adolescents had developed ways to deal with the situation. Suggestions were provided by the researcher result.