为更加准确、有效地描述证据间的冲突程度,提出一种新的证据冲突度量方法.该方法通过取小累加证据体之间两个相交为非空集的焦元BPA,得到证据重合度;然后基于其与证据冲突程度的关系,计算出证据冲突大小.实验结果表明,相比经典冲突系数与Jousselme证据距离,所提出的方法更加准确、有效. In order to more accurately and effectively describe the degree of conflict between evidences, a new measure of conflict of evidences is proposed.This method obtains the degree of evidence coincidence by taking two focal point BPA intersecting non-empty sets between the small accumulated evidence bodies, Then the size of the evidence conflict is calculated based on its relationship with the degree of evidence conflict.The experimental results show that the proposed method is more accurate and effective than the Jousselme evidence distance.