The decision-making on internet security protection needs a feed-back adjustment. It has to be predetermined ofthe "post-effect" ofthedecision.One oftheeffectsis delaying, and the other is enlarging. Delaying in making the decision will make the measures of crime control failed. To prevent its occurrence, the importance ofthe management on the crime information has to be stressed. The effects of enlarging result from the cooperation between different quarters ofthesociety.Inthiscase,an ordered structure is formed, leading to the enlargement of the functions ofthecrime control system.