With the coming of information era, the improper behaviors such as network abuse, network right violation and so on appear in college students, which is seriously harmful to the physical and psychological health of college students, as a result, network morality construction for college students has become an important field in college cultural construction and ideological and political education. This paper proposes to use socialist core value system to construct college students network morality based on the analysis of the improper behaviors and their causes of the students’ network morality, analyzes and elaborates network morality construction from the perspective of important significance, constructing principle and methods in order to raise network morality level of college students under the mutual action of multiforce.