In the past six months, our adult urology and pediatric urology departments in Xinhua Hospital have worked closely together to apply ureteroscopic and percutaneous nephrological techniques to treat urinary tract stones and related cases in children for 9 cases. Among them, one case of kidney stone in children was treated by percutaneous nephroscopy, four cases of bladder stones were treated by ureteroscopic laser lithotripsy, two cases of ureteral stones (23 months, 8 years old), and two cases of postoperative stent tube up into the ureteral lumen after hydronephrosis (the youngest case was 10 months old), which caused minimal trauma to the children, avoided the pain of incision, and obtained good treatment results. The common etiology of urinary stones in children is metabolic and the stones are predominantly negative (transillumination under X-ray). The current urological management of urinary tract stones in children is based on conservative treatment and open surgical extraction. For younger children with “formula” stones, the majority of treatment is conservative, unless the stones cause severe hydronephrosis, hematuria or infection that requires surgical intervention. Percutaneous nephrolithotomy (PCNL) and ureteroscopy (URS) are very well established minimally invasive procedures in adult urology, but they are rarely used in children with stones, mainly because the urinary tract lumen system in children is extremely small, the kidney and ureteral tissues are very fragile, and children are weak and have poor tolerance for surgery. The risk is high for both the child and the urologist. In the past six months, our urologists, based on the mature percutaneous nephrological and ureteroscopic techniques and the needs of children and their families, have taken on the challenge of minimally invasive surgery for children with urinary tract stones (especially upper urinary tract stones – kidney stones and ureteral stones), and have successfully performed minimally invasive surgery in these children with good results and no complications, saving the children from We have successfully performed minimally invasive surgery in the above-mentioned children with good results and no complications, saving them from open surgery. Of course, the technical requirements and risks of these minimally invasive surgeries are very high, requiring skillful percutaneous nephrological and ureteroscopic techniques and extensive experience in minimally invasive surgery, and the selection of patients for minimally invasive surgery must be very strict and cautious. At present, the cases we have handled are still limited to children with kidney stones with heavy hydronephrosis, and children with stones in the middle and lower ureter (the highest position of the stone is below the level of the fifth lumbar vertebra), and it is necessary to accumulate more clinical work to further expand the treatment scope of minimally invasive surgery. However, the development of minimally invasive percutaneous nephrolithotomy and ureteroscopic lithotripsy has brought “good news” to children with urinary tract stones and is expected to be a useful supplement to traditional open surgery.