The most common causes of pain after flexible mirror lithotripsy are pain in the urethra, irritation of the ureteral stent tubes in the body, hematoma of the renal peritoneum, and obstruction of the stone when it is discharged. After ureteral flexible mirror lithotripsy, due to the long time in the urethra operation, after doing the surgery may appear urethral mucosa damage, and then coupled with the ureteral tube stimulation can lead to urethral pain, this way of pain is also more intense, you can follow the doctor’s advice to apply painkillers to relieve. After ureteral flexible ureteroscopy, a ureteral stent tube is usually placed in the body. The stent tube has one end in the kidney and one end in the bladder, and the end in the bladder can stimulate the bladder to contract, leading to symptoms such as frequent urination, urinary urgency, urinary pain and blood in the urine. Surgery may cause subperitoneal bleeding or hematoma formation, which can manifest as postoperative back pain. Depending on the patient’s specific situation, bed rest and appropriate use of hemostatic drugs should be used. Obstruction of the discharge of residual stone fragments after flexible mirror lithotripsy may cause obstruction, and stone stimulation of the local urinary tract leading to spasm may cause pain. Therefore, pain after soft mirror surgery, you can first give symptomatic treatment, if there is no relief, further examination to clarify the cause of treatment.