The main reason for two hospital stays for the removal of kidney stones by flexible scopes is that kidney stones are large in size or multiple, and may need to be treated in two separate surgeries, if necessary, to ensure the patient’s safety during the surgery. For patients with large or multiple kidney stones, if minimally invasive surgical treatment is performed, the time to do the surgery may be longer and the risk to the patient is also higher. Because minimally invasive renal surgery requires continuous saline irrigation and flushing during the operation, the longer the operation time, the higher the pressure in the renal pelvis and the greater the damage to the kidneys. Therefore, in order to minimize the operation time and reduce the risk of patients, doctors need to perform staged surgery. Half of the stones will be removed in the first stage of surgery, and the remaining half will be removed in the second stage of surgery, which can achieve the minimally invasive effect, achieve the effect of stone removal, and also ensure the safety of the patients during the surgery. Patients should actively cooperate with the doctor’s treatment and follow up on time after the surgery in order to achieve a better therapeutic effect.