Abstract: As far as the criminal causes are concerned, the upanddown of vicious crimes is closely related to the unexpected deficiency and disorder of social mechanism, also closely related to the impropriety of educational system and the vacancy of mainstream culture, thus causing vicious crimes change from the "weak" through the "evil" to the "dark". Therefore it is necessary to find effective remedies for safeguard against vicious crimes so as to give in return the society a safe, harmonious space of living and development.

Key words: social phenomenon, social cause, vicious crime