文章详细分析了D-S证据理论的证据合成原理。针对D-S证据理论的不足,对其合成规则进行了改进,基本原则是要求多种来源的概率分配函数的合成结果满足“少数服从多数”的思维习惯;在Yager合成规则的基础上,给出了一种新的证据理论合成规则,使冲突证据的合成更为合理。 The article analyzes in detail the theory of evidence synthesis of D-S evidence theory. In view of the deficiency of DS evidence theory, the synthesis rule is improved. The basic principle is to require the synthesis result of probability distribution function from a variety of sources to satisfy the thinking habit of “minority obeying majority”. On the basis of Yager synthesis rule, A new theory of the synthesis of evidence theory is presented to make the synthesis of evidence of conflict more reasonable.