Biliary crystals are generally cholesterol crystals, which can form gallstones, mainly because the ratio of cholesterol, phospholipids and bile acids in the gallbladder is out of balance, so the cholesterol content in the gallbladder is increased and crystals are formed by internal precipitation, any disease that causes increased cholesterol in the gallbladder can cause biliary crystals. Specific treatment is as follows: 1. Avoid high-fat diet; 2. Keep the bile flowing smoothly, you can take oral ursodeoxycholic acid and Bujinkan Gallstone Lithium tablets; 3. If bile crystals have caused the occurrence of gallstones, they are treated as gallstones, and you can choose regular observation and elective surgery.