Abstract: This article defines the uncertainty degree of describing the features of evidence itself starting from the highly conflict evidence’s constraints on the application D - S evidence theory， and aiming at the existing problem of several common conflict measurement method. The connotation of evidence conflict is extended from inconsistency between the evidences to both inside and outside of evidence. Evidence conflict multi-measurement is given based on uncertainty， and the conflict processing method of maximum difference degree is put forward in order to enhance the effect of the conflict recognition. Validation analysis showed that the measurement method in this paper can effectively represent conflict degree between evidences; the processing of maximum conflict difference degree achieves significance of evidence conflict identification， which has good universality and effectiveness in evidence conflict recognition of complex systems.

Key words: evidence conflict, multi-measurement, uncertainty degree, difference