Abstract: Recently spiral CT cholargiography with technique of combine minimum intensity projection with curved planar reformation(MinP+CPR)is less studying but more important, which is basic on contrast-enhanced scan, by defining properly thickness for MinP processing and transferring the processed data sets to CPR soft for further reconstruction. Using this technique can obtain a overview of obstructed segment of bile duct and expanded segment of bile duct at same time. The quality of the data sets is good as or even better than that of other imaging method of bile duct and other Bile duct pre-processed techniques.For no invasion and complication, it is consider as a new alternative imaging method which is no limitation of serum bilirubin level, pacemaker and surgical clips.