Kidney stones 19.7mm by 20.3mm are relatively large and need to be treated surgically. Under normal circumstances, kidney stones larger than 12mm in diameter are considered large, therefore, kidney stones 19.7mm by 20.3mm are large in diameter and usually cannot be discharged on their own, which may cause severe lower back and abdominal pain, as well as urinary tract obstruction, induced hydronephrosis, and even irreversible damage to the kidneys. For this type of kidney stone, surgical treatment should be considered, such as ureteroscopy, ureteroscopy is the preferred surgical procedure for kidney stones with a diameter of 20mm, which can be discharged by itself after crushing the stone, with minimal trauma and fast recovery. The second option is percutaneous nephroscopy, which is less traumatic to the kidneys and most efficient in removing the stones after crushing them. During the treatment, patients should actively cooperate with the doctor, do not arbitrarily deal with their own to avoid adverse effects.