Kidney stone surgery D-J tube can be removed in 1 month, the longest should not be more than 4~6 weeks, the specific situation is related to the recovery of the ureter wall and the urinary drainage condition. After kidney stone surgery, there is some damage to the ureteral wall itself, and the application of D-J tube can help the recovery of the ureteral wall, and can drain urine, most of them can be removed in 1 month if the damage is not serious, and the tube wall can be placed for 4-6 weeks if the wall recovery is slower or if there is hematuria all the time; too long a period of time is prone to a series of complications, the most important one being easy to get infected. During the whole recovery period, we should pay attention to closely observe the recovery of the ureter, mainly through ultrasound, in addition, we should pay attention to observe the urination situation, once there is obvious pain and hematuria need to consult a doctor in a timely manner, and standardized treatment under the guidance of the clinician.