This paper expounds the“marginal employee”’s realistic dilemma which is mainly reflected in four aspects: lack depth participation in work business，encounter trust crisis in interpersonal relationship，suffer ignorance and damage in staff rights and face slim chance in promotion space，then points out that the“marginal employee”’s realistic dilemma will have a series of negative impact on the organization. The author considers that the fundamental cause of “marginal employee”is the employee’s own personality traits, the direct reason is the“relationship”between employee and organization, and the indirect cause is the inclusiveness of social values and the differences in social status. On this basis, the author puts forward seven management strategies from hiring, training, work arrangement, pay performance, career management, interpersonal relationship and enterprise culture to prevent and management the“marginal employee”.