Complicated electromagnetic environment increases the difficulty of searching radarspsila intelligence detection. The simulation requirements were introduced and the effects of complicated electromagnetic environment on searching radars were analyzed firstly; besides, the evaluating model was established considering the degree of detecting probability loss. Then, the simulation models were set up, taking the result of the evaluating model into account, the effects of complicated electromagnetic environment were embodied in the simulation thoroughly, in succession, intelligence processing was discussed briefly. The models established here have been used preferably in certain combat training simulation system.