This article is based on DDos offense and defense, taking the security monitoring mechanism of college network ideological and political management as the research object, starting with the analysis of the basic connotation of college network ideological and political education management mechanism, and expounding the definition, characteristics and functions of college network ideological and political education management mechanism. Through demand analysis, the design idea of the network information security monitoring system is given, and the system design framework and functional module division are described. Secondly, taking the security attack of the ideological network as an example, the security defense measures for constructing the ideological education network are proposed from the practical level.