实际应用中,Dempster规则要求的证据独立性可能难以满足.在相关源证据已知的假设条件下,基于证据的众信度函数,提出一种相关证据合成方法.该方法无需辨识独立证据的过程,可直接得到解析的合成结果,并且对相关源证据的形式没有要求.最后通过算例验证了所提出方法的有效性. In practical application, the independence of evidence required by Dempster rule may be unsatisfactory.According to the evidence-based belief function, we propose a related evidence synthesis method under the assumption that the relevant source evidence is known.This method does not need to identify the process of independent evidence , The analytic result can be obtained directly, and there is no requirement for the form of evidence of the relevant source.At last, an example is given to verify the effectiveness of the proposed method.