Aiming at the problems that the situation filtering rules in the prior art rely on priority to avoid conflicts, and the domestic hardware has low single-core frequency and large number of cores, the automatic conflict avoidance criterion is proposed, and the electromagnetic special situation filtering algorithm is constructed. The orthogonal and equal electromagnetic information description parameters are selected as the filtering attributes to realize zero detection conflict and automatic conflict avoidance in the filtering rule matching stage. The experimental results show that the proposed method can avoid the conflict of rules relying on priority evasion, improve the efficiency of parallel execution, realize real-time fine filtering display of electromagnetic reconnaissance situation, and assist operators to view the activities of key targets, which can be applied to engineering projects.