The social exclusion concept originates in Europe, undergoes several dozens year development, becomes a frequency of use quite high concept, the sociologists, the policy researcher, the Government department more and more favors in discusses some social question from the social exclusion angle in-depth root. This article embarks from the social exclusion theory's development process, introduced with emphasis the domestic and foreign theorists to this concept's limits and the social consequence, carry on initially by the time to the related social exclusion theory's research mentality comb.