Ureteroscopy is an important development in urological endoscopic technology that allows ureteral lesions to be examined under direct vision and to be treated by urological endoscopic techniques. There are two types of ureteroscopes, rigid and flexible. Ureteroscopes are placed through the urethra and bladder into the ureter and renal pelvis for examination and treatment through either rigid or flexible ureteroscopes. Ureteroscope is a medical device used for minimally invasive urological treatment and consists of optical fibers, working lumen and various working accessories for different purposes with small diameter, 35 to 45 cm long. Ureteroscopy is performed through a slender scope that enters the 0.2 to 0.5 cm diameter ureter through the urethra, bladder, and ureteral orifice. After connecting the surveillance equipment, the lesions in the ureter can be observed very clearly so that ureteral diseases can be diagnosed and treated through different instruments inserted in the working chamber. At present, ureteroscopy is mainly used for the treatment of ureteral stones, ureteral stenosis and the diagnosis of ureteral tumors and other disorders. Urology has been widely used.