The complexity of ureteral stone surgery is related to the surgical approach, which varies in complexity among the four common surgical procedures: ureteroscopic lithotripsy, percutaneous nephrolithotripsy, laparoscopic surgery, and open surgery. Evaluation of the complexity of a surgical procedure and the technical requirements are often accomplished through surgical grading, which is generally graded as one to four. 1. Ureteroscopic lithotripsy: operates through the body’s natural lumen to break up the stone, no wound, minimally invasive. Ureteroscopic lithotripsy is generally classified as Grade II (moderate surgery with uncomplicated surgical procedure and little difficulty in surgical technique) or Grade III (major surgery with complicated surgical procedure and some difficulty in surgical technique). 2. Percutaneous nephrolithotripsy: Generally a level III surgery, the operation is performed under ultrasound or X-ray localization through the lumbar back to reach the renal calyx or renal pelvis by fine needle puncture, and the stone is extracted or crushed under nephrolithotripsy. 3. Laparoscopic surgery: generally a level 3 surgery, with small incision, less bleeding, faster recovery and simpler than open surgery. 4. Open surgery: Generally a level 3 surgery, it is relatively the most complicated of the four types of surgery, with larger incisions and longer recovery time. If you have ureteral stones, it is recommended to consult a doctor for standardized treatment to avoid delay.