With technological advances and technical innovations, ureteral chondroscopy technology is taking an increasing share in the treatment of urological diseases. It can itself be inflected within the kidney, with the end of the mirror inflected at an angle of up to 180 degrees to 275 degrees, using the natural lumen of the human body, and is more minimally invasive, including the diagnosis of hematuria and the treatment of pelvic and renal calyx stones. Flexible scopes are mainly used to treat both upper ureteral and intrarenal stones, and are currently the main treatment for kidney stones up to 2 cm, but there are many cases of stones over 2 cm that have been successfully lithotripsed by ureteral flexible scopes. In addition, ureteroscopy has unique advantages for special cases such as isolated kidney, horseshoe kidney, bleeding tendency, spinal deformity, renal insufficiency, iodine allergy, rare blood type (RH negative blood, commonly known as “panda blood”), etc. Hematuria is mainly unilateral upper urinary tract hematuria, which cannot be clearly diagnosed by conventional ultrasound, intravenous pyelogram, cystoscopy combined with retrograde upper urography, CT and other examinations. The patient is given epidural anesthesia or general anesthesia in a lithotomy position, and the ureteral rigidoscope is first examined by moving up to the upper ureter or renal pelvis, placing a zebra guidewire, withdrawing the ureteral rigidoscope, and then placing the ureteral softoscope along the guidewire and moving up to the renal pelvis to examine the renal pelvis and calyces. If there is a blood clot in the renal pelvis, the blood clot can be removed with ureteroscopic foreign body forceps or lithotripter and then carefully examined. If the renal pelvis and calyces are occupied, biopsy is routinely performed for pathological examination. For small tumors, holmium laser tumor resection can be performed at the same time. Stones are mainly pelvic calyx stones, including primary pelvic calyx stones, residual stones from percutaneous nephrolithotomy and stones displaced into the pelvis and calyx by ureteroscopic lithotripsy, with a diameter of less than 3 cm. The ureteroscope is inserted in the same way as above. After entering the pelvis and calyces, the guidewire is removed and the stone is searched for, then a 200um holmium laser fiber is inserted with a power setting of 0.8-1.0J/5-15Hz to break the stone into particles smaller than 3mm. The Holmium laser fiber is withdrawn, a zebra guidewire is placed, a soft ureteroscope is withdrawn, and a 6 Fr double J tube is placed in the ureter along the guidewire. With the enhancement of the general public’s health awareness and the implementation of universal medical insurance, surgical treatment is becoming more and more “minimally invasive”, and ureteroscopy technology will definitely become a “powerful tool” in the treatment of urological diseases, reducing the immediate and long-term damage to patients and bringing “gospel” to the general public. The Ureteral Flexible Ureteroscopy technology will definitely become a “tool” in the treatment of urological diseases, reducing the immediate and long-term damage to patients and bringing “gospel” to the general public!