Ultrasonic kidney stone lithotripsy precautions: First, to do a good positioning, you can do a good positioning through ultrasound or abdominal plain film. Secondly, the preoperative preparation before ultrasonic shock crushing of kidney stones should be done to exclude any contraindications. You can improve the blood routine, coagulation function, liver and kidney function, electrocardiogram and other tests. This ultrasonic lithotripsy cannot be done in patients with a clear bleeding tendency, as well as in patients during pregnancy, and in patients with pacemakers, and in patients with severe cardiac arrhythmias. Third, before surgery, patients are advised to rest well, to clean the skin of the back the day before, and to get up in the morning on an empty stomach, without eating. Fourth, antibiotics can be used to prevent infection before surgery.