Abstract: In order to effectively idetify and accurately evaluate the hazard sources in coal mine production system and effectively control hazard sources, then, we measure the hazard sources from the possibility of risk formation and accident severity two dimension. To maximumly retain effective information, we introduce interval-valued intuitionistic fuzzy sets in the process of quantification, which contains non-membership degree and hesitancy degree. Then, we transfer the interval fuzzy information into interval basic probability assignment function to fuse the information from different sources by interval-valued evidence theory. Finally, combining the reality of a mine, we calculate the final degree of hazard source of each link. The evaluation results can more comprehensively response expert opinion and are consistent with the actual results, which illustrates the effectiveness of the method.