To improve target recognition in air and missile defense, the improved temporal evidence combination is proposed, in accordance with the idea of evidence reliability and evidence discounting. Based on temporal evidence accumulation, a multisource information fusion model is firstly presented. Then the accumulation temporal evidences are combined under weighted average combination rules based on the degree of credibility and falsity. Meanwhile, the realtime reliability factor is yielded by the credibility decay model, and the relative reliability factor is acquired by Einstein operator. Finally, the temporal evidence is combined based on the evidence discounting theory and the Dempster combination rule. The simulation results demonstrate that the proposed method makes good use of accumulation information, which can reflect the dynamic nature of temporal information fusion. Besides, it is illustrated that this method has good performance when dealing with conflict in temporal fusion, and can enhance the antiinterference performance of the target identification fusion system.