For the analysis of the internet crime problem, the same principles apply. There are a number of factors which affect the crime variations. The difficulty is to fmd out the dominant variables. All the crime variables can be divided into two groups: direct variables (directly affect the occurrence ofacrime).Oncethe relationship between the direct variables and the state variables is known, the mathematics model can be obtained, and the quantitative analysis can be carried out for the rules ofthe changes of the crime state.