Double J-tubes are usually removed with anesthetic. Double J-tubes are used to support the ureter to prevent stone-induced ureteral obstruction and to smooth drainage. The main use of absorbable thermoplastic elastomers to manufacture ureteral stent tubes, replacing the non-absorbable stent tubes commonly used in clinical practice. It can avoid secondary surgical extraction and reduce patient’s pain is the innovation of this project in the field of urological surgery. When placing the double-J tube, a tail wire will be placed at the end of the tube, which is left at the urethra, so that the double-J tube can be yanked out through the tail wire. This procedure may be painful as the tube is yanked out and rubs against the urethra, so anesthesia is required to reduce the pain. Patients who have had their double J-tubes removed are advised to drink plenty of fluids and keep an eye on the color of their urine. If there is a large amount of hematuria, cloudy urine, etc., it is recommended to go to the hospital in time.