The best way to treat complex intrahepatic bile duct stones is to surgically remove the liver lobes including the stones. However, if the intrahepatic bile duct stones are complex and cover the left and right lobes of the liver, the number of lobes that can be removed is limited, and the bile duct stones in the remaining lobes are difficult to retrieve because of the narrowing of the bile ducts and the inaccessibility of the cholangioscope. Our group placed a balloon dilation device through the “T” duct under fluoroscopy, placed it at the stenosis, and dilated the stenosed bile duct through the balloon. After 3 months of dilatation, the stone is then lithotripsed and retrieved by choledochoscopy through the sinus tract of the “T” duct. The advantage of this method is that, firstly, the stricture of the bile duct is lifted and there is no stricture, so it is not easy to recur after stone extraction; secondly, because the stricture is lifted, it is possible to remove all the stones and the rate of stone residue after surgery is low.