The violence in mass media has been a research focus of sociology and psychology. Many researchers paid more attention to the violence in movies and games, but neglected the violence in animations. This study examined the characteristics of violence that is perpetuating throughout popular teenage animations by content analysis method. In order to produce the representative sample, 596 middle school students were investigated by writing down the names of 10 preferable animations, and the top 3 animations were chosen from collected 98 animations based on frequency of nomination. Considering so many episodes in each animation, average 14 episodes from each animation were equidistantly selected as the research sample. After developing the contextual features coding schedule about the violence scene（mainly including the basic information of person involving in the violence, basic judgment about the cause and value of violence, relevant consequences of violence caused）, 3 postgraduate students who were familiar with these 3 animations were trained as the research coder. they spent 7 weeks，6 episodes per week，to finish the coding. Results showed that the content analysis reliabilities which include intercoder agreement and constant reliability were almost higher than 0.8, and these animations contained a large proportion of violent scenes. Further analyses surfaced other defining characteristics of violence in the animations that appealed to middle school students, namely 1) many of the perpetrators of violence were teenagers, students and heroes, and they were mostly male and attractive; 2)the causations of violence were mainly helpfulness, performance of official duties, and violence was always for the sake of justice and could be forgivable; 3) violent scenes were usually depicted in close-up and they usually were not bloody; 4) much of the violence was unrealistic and lacking in humor; 5) there were inadequate descriptions highlighting the suffering of victims and a lack of sympathy shown towards victims as well; nevertheless, perpetrators of violence were rarely punished in spite of the scale of bodily harm caused. Therefore, it was concluded that the characteristics of violence in popular teenage animations were attractive perpetrators; justified, unrealistic and humorless violence; glamorized violence scenes; and trivialized the physical aggression.