It is best to place a T-tube after choledocholithiasis surgery, which is good for surgical recovery and improves the prognosis, and for residual stones can be removed by T-tube after surgery. In order to reduce the obstruction of the bile duct and relieve the pressure of the bile duct, a T-tube can be placed in the bile duct, which can effectively reduce the appearance of biliary fistula caused by bile extravasation, reduce the pressure of the incision in the surgical area, and facilitate the healing of the incision. For the remaining stones can be after the operation, through the T-tube for stone removal, can remove the remaining stones in time, usually after the operation need to be under the guidance of the doctor to remove the T-tube on schedule. For patients with choledocholithiasis, the need for T-tube placement still depends on the specific situation, improve the relevant examinations, and active treatment under the guidance of the doctor.