Democray is the most importantn element in Dewey’s thought. In this paper Dewey’s theory on democray will be evaluated, furthermor some challenges are ascrbed to it: first, Dewey has not presented any philosophical argument about his idea: “Democracy is a moral ideal”. Second: if it is known by a posteriori method that Democracy is the best, this idea can not be generalized to future, so it could be critized and we can assume other methods or systems. Third: because of the imposibilty of the assuming of similar conditions for all peple, the capacity of doing rational judgment will not similar in spite of constituting democracy. Forth: Dewey has neglected of irrational elements in members of society devisions in his theory. Finally, since he denies that we can know the absolute, the attempt to establish the morally organized democratic society is so vaguely pictured by him, without necessary rational foundation
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