ObjectiveTo study the diagnostic value of imaging examinations and their accuracy in evaluating the malignant obstructive jaundice and their resectability. MethodsThe clinical data of 674 malignant obstructive jaundice within 10 years were collected and analyzed.ResultsFor BUS, CT, PTC, ERCP and MRCP, the preoperative accuracy in malignant obstructive jaundice were 74.0%, 86.5%, 88.4%, 92.9% and 94.0%, while the ratio of actual removals in those who had been assessed removable preoperatively were 63.4%, 68.5%, 86.8%, 87.3% and 93.9%, respectively. Conclusion MRCP， PTC, CT and ERCP are better than BUS in the diagnosis of malignant obstructive jaundice (P＜0.05 vs. P＜0.01), while MRCP，ERCP and PTC are much better than BUS and CT in evaluating resectability (P＜0.01). Combination of two or more imaging examinations can improve the accuracy of preoperative diagnosis and assessing resectability.