Abstract: In order to gain insight in the harmful information propagation and hold back it effectively,an experiment and analysis method is need.In this paper a harmful information propagation model for urban management is presented based on discrete event simulation.This model is constructed based on the individual behavior.Thus,it can be Abstracted more directly and be extended more easily.In addition,this model possesses higher fidelity compare to traditional model.Finally,some experiments are conducted with this model.Simulation results demonstrate that this model can work well in urban management.