Based on Goffman's framing theory,this paper explores the discourse frames and the evolution logic of rumors in the cyber violence incident,and finds that there are two kinds of rumor discourse frames namely,"tuning"and"fabrication".Among the rumor discourse frames produced,three common ones are"sex,humanity and honesty".The evolutionary logic from rumor to cybercrime has gone through activation and transformation of frames,during which the Internet users gradually transform from bystanders to"messengers of justice"and then"Internet mobs".