Abstract: Aim ing at the present situation and the exiting problem of information system management in Daqing Normal University, this paper introduces the thinking of the principle of camouflaging of network security in management system, builds the digital library system detection model based on abnormal behavior characteristics, carries out the quantification controlling of the automatical response process of service requests of digital library system by using the idea of CEST (Colored Event-driven State Transition).This model is feasible after experiment tests and can improve the security of digital library network and information system to a large extent.

Key words: the principle of camouflaging, CEST, automatical response