1.Blood test, for example, blood count, liver function. 2.B ultrasound is the first choice for gallstone disease examination. It can not only detect stones, determine the size and number of stones, but also clarify the location and distribution of stones, and understand the condition of bile duct and gallbladder, whether there is dilatation, stenosis, atrophy, whether there is function, whether other lesions occur, in addition, it can also determine whether there is atrophy, sclerosis, abscess in the liver lobe where stones occur, etc. 3.CT is a common examination method for gallstone disease. In addition to the above mentioned purposes, it is more advantageous for hepatobiliary stones, lower bile duct stones, combined bile duct and liver lesions, etc. In addition, CT can provide very visual imaging images, which are easy for the surgeon to read at any time. 4, MRI and MRCP In addition to the above purposes, they can also use biliary imaging technology to show the biliary tree, which can replace PTC or ERCP examination to some extent. 5.PTC or ERCP has tiny trauma, and the biliary imaging can clearly show the stone, dilatation and stricture in the bile duct, and can indicate the presence of bile duct variation, malformation, etc.