In the highly complex and changeable modern war, how to quickly and intuitively discover the hot spots of situation is an important research content. This paper provides a multi‐index evaluation method to solve the problem of finding situation hotspots. We designed the influence factor algorithm based on TOPSIS method, and then introduced the idea of variable weights to construct the weight calculation method of influence index based on variable weights. On this basis, we construct a situation heat map construction method based on multi‐index evaluation. The example analysis shows that this method can quickly find hot spots and has good practicability.