A general distinction is usually made on the basis of X-rays, but the final judgment depends on the nature of the stone removed. Gallstones are categorized according to their composition into cholesterol stones, bile pigment stones and mixed stones (calcium phosphate, calcium carbonate and other calcium-based stones). 1.80% of gallbladder stones are cholesterol stones, white-yellow, gray-yellow or yellow in color, with different shapes and sizes, as small as grains of sand and as large as several centimeters in diameter, polyhedral, round or oval in shape. The hard surface is smooth, and X-ray examination is not obvious. 2. bile pigment stones cholesterol content should be less than 40%, its soft and friable brown or brown, the shape of the stones vary in size, granular, long, or even cast pipe-shaped, generally multiple. In the X-ray part of the visualization. 3. In addition, there are calcium carbonate, calcium phosphate or calcium palmitate as the main component of mixed stones. If the stone has a high calcium salt content, it is often visualized on X-ray. Whether or not to operate depends on the clinical symptoms and the number and size of stones, etc. It is recommended to follow the doctor’s advice for the next step of treatment.