We do the modeling analysis on the response of network cases with control theory of general system in system science and respond to different networkcases with overall response mechanism and local response mechanism in the control theory.

In recent years,the network pornography has already become a question concerned the commons with the high development of the network.

At present,our country network pornography activity situation is very severe,and we face many prob- lems in the fighting against the intemet pornography work:the special investigation strength is weak,the detection collection of the evidence is difficult;the related law is imperfect,the discretion of punishment to be difficult and so on.

Social Distance and the Third Person Effect:a Case Study of Net Pornography among Secondary School Students

The formation of net pornography chain must be supported by subjects,net space and illicit money,which can be the attacking point of our administration and prevention.