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Dempster-Shafer evidence theory has been widely used in many strategic fields, such as underwater target recognition. But combination of the DS evidence theory always brings some paradoxical behaviors, e.g., the Zadeh paradox problem. Aim at this problem, overall consideration with the degree of conflict and the degree of support between evidence bodies is required. A definition called anomaly factor was proposed, which can be used to detect the abnormal evidence. The weight was assigned to multi-source evidences based on the detection results. Experiment results prove that the proposed method is effective, and it can get better results than the typical DS method.