Choledochal stone 0.9cm usually need timely surgery, but it is not necessary to operate, now some gallstones can choose endoscopic stone extraction treatment. Choledocholithiasis is easy to cause obstruction of the common bile duct, so choledocholithiasis is still mainly treated by surgery. However, when 1 to 3 stones and the diameter of choledocholithiasis is less than 15mm, transduodenal endoscopic stone extraction can be used, and a better result can be obtained, but it is necessary to grasp the indications and contraindications for treatment. Once endoscopic stone removal is not suitable, surgical treatment is still needed. Choledocholithiasis in the diet should be kept light, do not overeat, avoid high fat, high cholesterol diet, avoid fried food. Pay attention to rest and do not overwork, and it is better to have suitable exercise. If there are clinical symptoms of abdominal pain and fever, avoid the use of painkillers, should be timely hospital consultation, so as not to delay the condition.