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The concept of participation and its application in various sciences particularly urban planning has been considered by thinkers and experts since several decades ago. The experience has proved that the participation to conduct urban affairs causes improving the efficiency, assigning the cost toward social priorities and fundamental projects. Nowadays, necessity of citizenship participation to enhance the physical and social condition of the cities is not inapparent over anyone. the main purpose of this article is to explain the direct/indirect relationships among the most key of urban participation barriers in Iran. To this end, it is used the interpretive structural modeling (ISM) and Matrice d’Impacts Croise´s Multiplication Applique´e a´ un Classement (MICMAC) analysis under fuzzy environment. The ISM method is interpretive as the judgment of a group decides whether and how the factors are related. It is structural as an overall structure is extracted from the complex set of factors on the basis of relationship amongst the elements of the system. The article research method is descriptive and analytical so that its part of descriptive included the literature review of urban participation barriers and problems in Iran, and its part of analytical encompassed the explanation of relationships among the barriers.