In this paper, I discuss flaming participants' motives by empirical analysis. Flaming is defined that slander comments rush to social media for the speech content and actions of a person. The results showed that many flaming participants (about 60%-70%) have participanted in flaming by a sense of justice. Participants who have enjoyed flaming are in the minority, about 20%. Furthermore, the ‛justice type' participants participate in a lot of flaming and write many times per 1flaming. It was found that the number of participation in flaming increases by about 1.35 when people think that flaming has a positive impact on society. In addition, the number of writing per 1 flaming increases by about 4.07 when people think that flaming has a positive impact on society.
