Abstract: Objective To approach the value of spiral CT thin imaging reconstruction in the diagnosis of obstructive jaundice in order to improve the correctness of the diagnosis.Methods Analysis the cases'clinical manifestation and the CT images,who were diagnosed as obstructive jaundice by operation.All of cases had high-resolution computed tomograyhy scan.The thickness and the interval is 5mm,reconstructed the thickness and the interval to 1mm and 1.5 mm,then send the images to the workstation and MRR were processed.Analysis the date with the pathology.Results Spiral CT thin imaging reconstruction have 98% and 93% in the accuracy of location and characterization in the obstruction.Conclusion The spiral CT thin imaging reconstruction is a good method to improve the accuracy of location and characterization in the obstructive jaundice.