The purpose of the research was to investigate the characteristics and related factors of dating violence. The subjects were 548 adolescents in high schools. The gathered information was analyzed by frequency, percent, 1-test, ANOVA, and correlation by using the SPSS 10.0 program. The results were as follows: (1) $58.6\%$ of respondents have had one or more dates with the other sex, so the association with the other sex is remarkably universal and natural. (2) In the case of physical violence, $18.5\%$ claimed that they have been injured in some ways, and $18.3\%$ said some kind of harm was done to them. (3) In terms of psychological violence, $32.8\%$ reported psychological damage and $35.6\%$ reported being harmed. (4) In terms of sexual violence, $20.8\%$ reported damage, while $18.2\%$ said they were harmed. (5) The relationship between physical, psychological and sexual violence has a significant relationship with the overall experience of violence. (6) When we looked at the social demographic factors, we found that boys rather than girls, and vocational school students rather than academic school students have more violent experiences.