The education of marginal students is an important theoretical and practical subject of moral education for college students. It is an important content of education that satisfies the people. From the multi-dimensional perspective of situation theory, emotional sociology theory and social network analysis theory, this paper re? veals the main characteristics of college marginal students. They are in the marginal position of the group inter? personal network structure, floating on the boundary of collective mainstream culture, the sense of collective membership being relatively weak. They lack collective participation and positive emotional experience, and have little gains and influence in the collective. Focusing on the identification and cognition of marginal students, dialectical analysis is carried out from three aspects: position, psychology and power. Finally, three suggestions on the internalization strategy of college marginal students are put forward: optimize the supply of educational re? sources and create a fair educational environment; strengthen psychological and emotional support, strengthen students’subject consciousness; strengthen quality development education, and improve interpersonal experi? ence.