Surgery is the main treatment for choledocholithiasis, but because of the age of 90, if it is difficult for the body to tolerate surgery, conservative treatment can be carried out under the advice of the doctor. 1. Surgery: Surgery for choledocholithiasis mainly includes choledochotomy, bile-intestinal anastomosis, endoscopic retrograde cholangiopancreatography and lithotripsy. It is suitable for recurrent or recurrent stones. 2. Conservative treatment: if stones cause acute cholangitis attack, fasting and fluid replacement are needed to correct the acid-base balance imbalance; follow the doctor’s instructions to take ceftriaxone, ceftazidime and other anti-infective treatments; if the pain is severe, scopolamine and other painkillers can be taken under the guidance of the doctor; blood transfusion and other systemic supportive treatments are given when necessary. In addition, it is recommended to perform percutaneous hepatic cholangioperesis for bile drainage. Elderly choledocholithiasis should pay attention to the daily diet light, avoid strenuous exercise, specific treatment can consult a professional doctor’s opinion.