After placing the T-tube after bile duct surgery, it is found that there is a lot of sand and gravel in the T-tube, it is necessary to be flushed. This is because the patient bile duct surgery after the placement of T-tube, sand and stones, easy to lead to T-tube obstruction, will cause the T-tube drainage flow is reduced, resulting in the body’s secretion of bile can not be discharged from the body in a timely manner, resulting in bile siltation, easy to lead to recurrent bile duct stone situation. Therefore, it is recommended to flush the T-tube if there are many stones in the T-tube. Bile duct surgery patients, after placing the T-tube, need to observe the color of the drainage and drainage flow every day, if the color is abnormal, the drainage flow is abnormally reduced, you need to find out the reason, to see whether the drainage device is smooth. If the patient is not feeling well, he should go to the hospital for examination in time, and should not be careless, so as not to delay the treatment.