Prevention on crimes of the under ground of crimes with characters of th eunder ground is a project,including three parts:Firstly,scientific predic tion on crimes with characters of the under ground;

• 黑社会(性质)犯罪预防是一项系统工程，主要包括关系密切的三方面内容：一是对黑社会(性质)犯罪进行科学预测；