Abstract: Rumor is a kind of false information.In the anger-venting incidents,the lack of authoritative information is the basis for occurrence and spread of rumor.Irritation and strangeness of rumor satisfy the spiritual need of the receivers,and rumor distorts the truth,causes sensation,and stimulates the occurrence of mass thinking and irrational behaviors,promoting the mass incidents to take place.In order to prevent the occurrence of mass incidents,information should be open,supply channels for interest-voicing should be increased,voicing efficiency should be enhanced,political identity should be heightened,and most importantly,rumor should be governed by law.

Key words: rumor, non-immediate interest appeal, social anger-venting incidents